Historical Inquiry & Indigenous Nations — Print · U.S. & New York History: Indigenous Nations to Reconstruction, Grade 7

Five focused units, a three-session source workshop, chapter review, and chapter quiz.

Printable chapter lessons and review.

Historical Inquiry: Questions, Sources & Evidence

Learning goals

Before this unit

Locate the period and region using the supplied background and timeline. Define unfamiliar terms and distinguish a document’s assertion from an established outcome.

Use three flexible 40–45-minute sessions: background and Parts 1–2 with checks; Parts 3–4 and the worked evidence case; then remaining practice, a timeline or labeled model, revision, and the exit check. Complete one short part at a time. Embedded checks count toward the practice set, rather than duplicate homework. Workshop, review, quiz, exams, and flexible support have separate time.

Almost everyone has heard that the Dutch bought Manhattan from Native Americans for $24 in beads. It is one of the most repeated facts in American history. It is also, in almost every detail, wrong — and tracing how it went wrong teaches you more about history than memorising it ever could.

There is exactly one surviving source. On 7 November 1626 a Dutch official named Pieter Schagen wrote a short letter to his superiors reporting that a ship had arrived from the new colony and that the settlers “have bought the island Manhattes from the wild men for the value of 60 guilders.” Schagen was in Amsterdam. He had never seen Manhattan. He was passing on shipboard news.

That single sentence is the entire documentary basis. It does not say who sold the island, what was handed over, or what either side understood the agreement to mean. Everything else you have heard — the beads, the $24, the idea that the Lenape were cheated — was added later by people who were not there either.

Build your understanding

Use three flexible 40–45-minute sessions: the Schagen letter and what it does and does not say; where the $24 came from and what the Lenape understood; then the practice set, the source-analysis task, revision and the exit check. Workshop, review, quiz and exams have separate time.

Part 1 · One letter, eleven words of substance

The Schagen letter sits in the Dutch National Archives in The Hague and runs to a single page. The part everyone quotes is eleven words long in the original Dutch. The rest of the letter is about cargo: 7,246 beaver skins, 853 otter skins, and assorted mink and wildcat, which tells you plainly what the Dutch West India Company actually cared about. Manhattan is mentioned almost in passing, as one line of news among the shipping returns.

Notice what the document is. It is not a deed, a contract or a treaty; no such paper has ever been found. It is not an eyewitness account, because Schagen was more than three thousand miles away. It is a secondhand summary, written by an administrator, of what a ship's crew said when they docked. A historian would call it a secondary source for the purchase itself, even though it is a primary source for 1626 Dutch administration.

That distinction matters more than it sounds. A document can be genuine, old and completely reliable about one thing while being weak evidence for another. The Schagen letter is excellent evidence that the Dutch believed, in November 1626, that a transaction had happened and that 60 guilders was the figure in circulation. It is poor evidence for what was handed over or what the Lenape agreed to.

Pause and explain

Schagen's letter is genuine and dated 1626. Why is it still weak evidence for what the Lenape agreed to?

Check your reasoning after answering

Because he was in Amsterdam and never saw the transaction. He was repeating what a ship's crew reported on docking, so the letter reliably shows what Dutch officials believed had happened, not what was said or understood on the island. A document can be authentic and still be secondhand about the thing you want to know.

Part 2 · Where the twenty-four dollars came from

The letter says 60 guilders. It does not say dollars, and it does not say beads. The famous figure was produced in 1846, when the New York historian John Romeyn Brodhead converted 60 Dutch guilders of 1626 into contemporary American money and arrived at about twenty-four dollars. That number was then repeated for the next century and a half until it stopped sounding like a conversion and started sounding like a fact.

It is a bad conversion, for a reason that has nothing to do with arithmetic. Comparing money across 220 years using a simple exchange rate ignores what the money could buy. Sixty guilders in 1626 was roughly several months of a labourer's wages — estimates vary, and historians disagree, which is itself worth noticing. It was not a fortune, but the picture of a continent traded for pocket change is an artefact of the 1846 calculation, not of 1626.

The beads are not in the letter at all. Dutch trade goods of the period typically included duffel cloth, iron axes, hoes, kettles, knives and wampum — the shell beads made along Long Island Sound that carried real value in regional exchange. Later deeds from the Hudson Valley list such goods item by item. The beads entered the Manhattan story through retelling, because they made the bargain sound more lopsided and the story better. A detail that improves a story is exactly the detail to check.

How a 1626 letter became the $24 storyHow eleven words became "$24 in beads"The evidence never changed. The claim did.1626Schagen letter"bought the islandManhattes ... forthe value of60 guilders"1846Brodhead converts60 guildersrestated asabout $24in 1846 moneytodayThe retold claim"Minuit boughtManhattan for$24 in beads"+220 yrsretellingOnly the first box is a source. The dollar figure is an 1846 calculation; the beads appear in nocontemporary record of the transaction, and no Lenape account of 1626 survives at all.Dutch National Archives, letter of Pieter Schagen, 7 November 1626.
The evidence for the Manhattan purchase has not changed since 1626: one letter, reporting a value of 60 guilders. What changed was the retelling. John Romeyn Brodhead converted the guilders to about $24 in 1846, a figure that ignores what the money could buy; later tellings added Peter Minuit by name and the beads, neither of which appears in the 1626 record. Each step is a step further from the only source.

Pause and explain

Someone says “the Dutch paid $24 for Manhattan.” Name two things wrong with the sentence.

Check your reasoning after answering

The currency and the date of the figure. The one source records 60 guilders, not dollars; the $24 comes from an 1846 conversion by John Romeyn Brodhead, 220 years afterwards. Converting by exchange rate also ignores purchasing power, which is why the sum sounds trivial today when it was a few months' wages then.

Part 3 · What the other side thought it was doing

The hardest problem with this story is that one side left no document. The Lenape, who lived across what is now New York City, New Jersey and eastern Pennsylvania, kept records in speech, wampum and memory rather than in writing, and no Lenape account of 1626 survives. Everything written at the time was written by the people on the other side of the exchange.

What historians can reconstruct from later Lenape and Haudenosaunee dealings is that land in this region was generally understood as something a group held and used, not something an individual could sell outright and permanently. Agreements of this kind were often understood as granting rights to share, use or pass through, renewed through continuing gifts and relationship. The Dutch, working from European property law, recorded a sale.

So the two sides may have come away from the same afternoon believing two different things had happened, and the only surviving record is in the language of one of them. This is not a detail about 1626. It is the central difficulty of the next three hundred years of this course, and it starts here.

It also explains something that will otherwise look like bad faith later. When colonists and Native nations fell out over land they had both signed for — as happened repeatedly through the 1600s and 1700s — the quarrel was often not that someone had lied, but that two legal traditions had been written down as one agreement, in one language, by one side. Recognising that is different from excusing it: the Dutch and later the English acted on their reading and took the ground.

Pause and explain

Why is the absence of a Lenape document a historical problem rather than just a gap?

Check your reasoning after answering

Because the surviving record is one-sided, and silence is easy to mistake for agreement. The Dutch wrote a sale in the terms of European property law; Lenape practice generally treated land as held and used by a group, with agreements renewed through relationship. Using only the written side risks reporting one party's understanding as what both parties meant.

Part 4 · Four questions to ask any source

From here on you will meet hundreds of documents, and the same four questions open all of them. Who made this, and were they present? When was it made — at the time, or long afterwards? Why was it made, and for whom? And what would this person have no way of knowing, even in good faith?

Run the Schagen letter through them and the answers come fast. A company administrator; not present; three weeks or so after the ship sailed, which is prompt for the news but still secondhand; written to report cargo to superiors; and he could not know what was said on the island or what the Lenape understood. None of that makes the letter worthless. It makes it precise — you now know exactly what weight it bears.

The same four questions will do real work on a 1776 pamphlet, an 1857 court ruling and an 1863 army return. They are also why historians change their minds, which is a feature of the subject rather than a failure of it: new documents turn up, old ones are reread, and a claim everyone repeated for 150 years turns out to rest on an eleven-word aside about beaver skins. When you meet a confident sentence about the past in this course, the useful reflex is not to doubt it but to ask which document it came from.

Pause and explain

Apply the four questions to a letter a Civil War soldier writes home the evening after a battle. Which question is likely to expose the biggest limit?

Check your reasoning after answering

What he could not know. He was present and wrote immediately, so he is strong on his own experience — the noise, the fear, his own regiment. But a soldier in the line cannot see the whole field, does not know casualty totals, and may not know who won. The limit is scope, not honesty.

Apply the whole unit · Take a famous claim apart

A textbook says: “In 1626 Peter Minuit purchased the island of Manhattan from the Native Americans for $24 worth of beads.” Only one contemporary source exists, and it is the Schagen letter of 7 November 1626.

Your task

Identify every element of that sentence the source does not support, and rewrite it so it claims only what the evidence carries.

What your response should show

  • Separates the sentence into checkable claims rather than judging it whole
  • Names 60 guilders as what the source says, and 1846 as where $24 came from
  • Explains why an exchange-rate conversion across 220 years misleads about value
  • States what is unknown because only one side left a written record
Response guidance — after your attempt
  1. List the sentence's claims separately: the date, the buyer's name, the seller, the price, the currency, and the goods.

  2. Check each against the letter, which reports that settlers “have bought the island Manhattes from the wild men for the value of 60 guilders.” Mark each supported, unsupported, or added later.

  3. Deal with the $24 specifically: say where it came from, in what year, and why converting by exchange rate across 220 years misleads.

  4. Write one sentence that a historian could defend, and a second naming what remains unknown.

Supported: the year, and that the Dutch recorded acquiring the island for a stated value of 60 guilders. Unsupported by this source: Minuit by name, which nation the sellers belonged to, and the beads, which appear in no contemporary record of the transaction. Added later: the $24, converted by John Romeyn Brodhead in 1846. A defensible sentence: “A Dutch report of November 1626 states that settlers acquired Manhattan for goods valued at 60 guilders.” What remains unknown: who negotiated, what was handed over, and what the Lenape understood the agreement to grant — no record from their side survives.

Read the documents yourself

Parent / teacher teaching notes

Ask for one because-statement, a dated connection, and a source limitation. Give specific feedback and time to revise. Allow notes, a glossary, oral explanations, or a labeled timeline. Evaluate context, evidence, and reasoning rather than the learner’s politics, religion, cultural identity, or agreement with the model wording. Do not require family disclosure or role-play of slavery or persecution.

The key idea

Every claim about the past rests on a source, and sources were made by people with reasons. The famous story that Manhattan was bought for $24 comes from one short letter written in 1626 by a man who was not there, and the dollar figure was invented by a historian 220 years later.

Worked examples

Example 1 · Worked evidence case

Explain why the records can agree and identify what they cannot establish about the whole term.
  1. Identify the different measures: enrollment and daily presence.
  2. Compare the same period without treating the measures as identical.
  3. Seek additional dated attendance records for a term-wide claim.
Answer: The register lists 12 learners, while 9 were present on one recorded day. Three were not marked present that day, assuming the same roster and complete marking. That does not show why they were absent or their attendance throughout the term. More dates and information about the recording method would test a broader claim.

Example 2 · Compare a second claim after your attempt

Two webpages copy the same newspaper report. Can they independently confirm the event?
  1. Identify the relevant period, institution, or evidence category.
  2. They preserve access to one report, not two independent observations. Trace the original date, writer, purpose, and evidence, then compare a separately created record.
  3. State the narrower conclusion the supplied information can support.
Answer: They preserve access to one report, not two independent observations. Trace the original date, writer, purpose, and evidence, then compare a separately created record.

Avoid these mistakes

Check your understanding

Why is “Did the canal improve every life?” difficult to answer with one freight receipt?

Discuss the answer

The receipt concerns a particular shipment and cost. It cannot establish every person’s earnings, safety, displacement, or other experience; specify a narrower claim and seek additional records.

Does calling a letter a primary source prove its statements?

Discuss the answer

No. Its date and connection to the event make it relevant evidence, but its claims still need contextual reading and comparison with other information.

Words to know

context
The time, place, institutions, and conditions surrounding an event.
primary source
Evidence created in the period or activity being investigated; its form does not automatically guarantee accuracy.
interpretation
An explanation of evidence that can be compared with context and other records.
corroboration
Comparing independently produced evidence to test a claim.
inference
A reasoned conclusion drawn from observations; it can require further testing.

Extend the historical inquiry

If you use a linked record, identify creator, date, audience, purpose, form, and a specific claim it supports. Keep original wording separate from course paraphrase. Seek a different independently produced record that would test an inference.

In the real world

Trace a dated claim to its evidence and distinguish stated aims, institutions, and actual access. Describe people and communities without universal stereotypes.

Exit check

How can a writer improve a claim that one diary represents every resident?

Check your explanation after answering

Identify the diarist, date, and setting, describe the recorded experience, and qualify the generalization. Compare other independently produced accounts before extending it.

Explain your reasoning without notes. If a key idea is missing, revisit the lesson and try again.

Reading Maps, Timelines & Historical Change

Learning goals

Before this unit

Locate the period and region using the supplied background and timeline. Define unfamiliar terms and distinguish a document’s assertion from an established outcome.

Use three flexible 40–45-minute sessions: background and Parts 1–2 with checks; Parts 3–4 and the worked evidence case; then remaining practice, a timeline or labeled model, revision, and the exit check. Complete one short part at a time. Embedded checks count toward the practice set, rather than duplicate homework. Workshop, review, quiz, exams, and flexible support have separate time.

You will meet a great many dates in this course, printed with the confidence of arithmetic. Most deserve it. Some do not, and knowing which is which is a skill in itself.

Take one of the most important events in the history of this state: the founding of the Haudenosaunee Confederacy, the alliance of five nations that dominated the region the colonists would later call New York. Nobody disputes that it happened. The proposed dates for it range from 1142 to about 1600 — a gap of more than four hundred years, which is the distance between the Mayflower and today.

Maps carry the same problem in a different form. The Mitchell Map of 1755 was used by both sides to negotiate the Treaty of Paris in 1783, which means a document drawn before the war decided the borders after it. Where the map was wrong, the border was wrong, and some of those errors took another sixty years to argue out.

Build your understanding

Use three flexible 40–45-minute sessions: the dating of the Confederacy and the kinds of evidence behind it; what a map asserts, using the Mitchell Map; then the practice set, a dated timeline of your own, revision and the exit check. Workshop, review, quiz and exams have separate time.

Part 1 · One founding, three answers

Haudenosaunee oral tradition records the founding in detail: the Peacemaker travelled among five warring nations — Mohawk, Oneida, Onondaga, Cayuga and Seneca — and persuaded them to bury their weapons under a white pine. The tradition includes a sign in the sky, a darkening of the sun, at the moment the last holdout agreed.

In 1997 two researchers, Barbara Mann and Jerry Fields, argued that the darkening was a total solar eclipse and worked backwards through the astronomy. An eclipse crossed Haudenosaunee territory on 31 August 1142, and they proposed that as the founding date. The reasoning is checkable: eclipse paths can be computed precisely for thousands of years.

Most archaeologists put the founding far later, somewhere between about 1450 and 1600. Their evidence is in the ground. Iroquoian villages of the earlier period are heavily fortified with timber palisades, which is what communities build when they fear their neighbours; the fortifications thin out in the later 1400s and 1500s, which is what you would expect once the neighbours stop being enemies. A third group reads the first European accounts and argues for the 1570s.

Pause and explain

Three groups of researchers give dates four centuries apart. Does that mean two of them are being careless?

Check your reasoning after answering

No — they are reading different evidence. Oral tradition preserves the sequence and the sign in the sky; astronomy can date an eclipse exactly but cannot prove the tradition refers to that one; excavated palisades show when villages stopped fearing attack but give a range, not a year. Each method is sound and answers a slightly different question.

Part 2 · What a date is actually resting on

Every date you meet rests on one of a few kinds of evidence, and they are not equally precise. A dated document is the strongest: a treaty signed on 3 September 1783 was signed that day. Astronomy is precise but needs an assumption to connect it to the event. Archaeology gives ranges — radiocarbon dating returns a span, not a year. Oral tradition preserves order and meaning reliably over long periods but is not built to carry calendar dates, because it was never meant to.

So the honest way to write the Confederacy's founding is not to pick a number and move on. It is to say: founded before European contact, by a process the Haudenosaunee themselves record in detail, at a date disputed between about 1142 and about 1600, with the evidence pulling in different directions. That sentence is longer and less satisfying than “1142”. It is also true.

Watch for this when a textbook gives you a suspiciously round or suspiciously confident number for anything before written records. The confidence usually belongs to the printing, not to the evidence.

Pause and explain

Rank these by how precisely they can fix a year: a signed treaty, a radiocarbon date, a computed eclipse. Explain the middle one.

Check your reasoning after answering

A signed treaty is exact, a computed eclipse is exact as astronomy, and radiocarbon is least precise. Radiocarbon returns a span of decades with a probability attached, not a single year, so it can say a village stood in a period but not when it was built. The eclipse is exact in itself but depends on assuming the tradition describes that eclipse.

Part 3 · A map is an argument

John Mitchell published his map of North America in 1755, before the French and Indian War. It was the best available, and in 1782 and 1783 the American and British negotiators in Paris spread it on the table and drew the new country's boundaries on it. A copy with their markings survives.

The map was wrong in places, and the errors became the border. It misplaced the source of the Mississippi, which left the northwestern boundary describing a line that could not exist on the ground. Disputes over what the 1783 text meant — traced on a map drawn twenty-eight years earlier by a man who had never seen most of the country — were still being settled in the 1842 Webster–Ashburton Treaty, nearly sixty years later.

Mitchell's map also did what most European maps of the period did: it showed Native nations where it was convenient and left vast inhabited regions looking blank or merely labelled. Empty space on a map is not evidence of empty land. It is evidence of what the mapmaker knew, or wished to assert, about who had a claim.

That omission had a purpose. Mitchell drew his map for the Board of Trade in London, and it was designed to support British claims against French ones — which is why British territory runs generously westward across country no British official had surveyed. When the negotiators of 1783 divided North America between Britain and the new United States using that sheet, the Haudenosaunee and every other nation living on the land were not in the room and are barely on the paper. Within eleven years the Confederacy was negotiating the Treaty of Canandaigua in 1794 over ground that two European-descended powers had already assigned to each other.

Pause and explain

Why is a blank area on a 1755 European map of North America not evidence that nobody lived there?

Check your reasoning after answering

Because the map records what its maker knew and what he wanted to claim, not what was on the ground. Mitchell had never seen most of the continent and worked from reports. Land shown as empty was often densely occupied by nations he had no information about — or whose presence a map meant to support British claims had no reason to mark.

Part 4 · Reading both without being fooled

Three habits will carry you through the rest of the course. First, ask what a date rests on, and accept a range when the evidence only supports a range. Second, ask what a map leaves out, and who benefits from the omission. Third, notice that spacing on a timeline is a design choice: a timeline with 1763, 1776 and 1783 evenly spaced hides that the first gap is thirteen years and the second is seven.

These are not reasons to distrust maps and timelines. They are the reasons to use them properly. A timeline is excellent at showing order, which is what you need when deciding whether one thing could have caused another — an event cannot be caused by something that happened after it. A map is excellent at showing distance and terrain, which is why the Erie Canal's route makes sense the moment you see where the Appalachians stop.

Use each for what it is good at, and ask what it is quietly asserting. You will do both in every chapter from here.

Neither the dating problem nor the map error is a reason to give up on dates and maps. Both are tools you will use constantly, and both work better once you know what they can and cannot carry. The point is to ask, every time, what a number or a line is actually resting on.

One last habit, which costs nothing: check the date of the map itself, not just the date of the thing it shows. A map printed in 1850 showing the colonies in 1750 is a nineteenth-century argument about the eighteenth century, and it will quietly carry what people in 1850 believed. The Mitchell Map is the sharpest example in this course of why that matters — a 1755 sheet still setting borders in 1783 and still being argued over in 1842.

Pause and explain

A timeline shows 1763, 1776 and 1783 at equal spacing. What does it get right, and what does it hide?

Check your reasoning after answering

It gets the order right, which is what you need to test whether one event could have caused another. It hides duration: thirteen years separate the first two and seven the last two, so the even spacing suggests a steady march to independence when the pace was uneven. Order is reliable on a timeline; elapsed time is not, unless the scale says so.

Apply the whole unit · Measure a distance, then say what the measurement leaves out

A map of the Mohawk corridor carries a scale bar in which one bar length represents 20 km. Between two marked settlements the straight-line gap measures six bar lengths. A note records that the river route between the same two places runs about 165 km, and that a loaded boat covered roughly 30 km a day.

Your task

Work out the straight-line distance, compare it with the travelled distance, and explain what the map cannot tell you.

What your response should show

  • Calculates 120 km from the scale and states it is straight-line
  • Explains why the travelled route exceeds the straight-line distance
  • Estimates the journey and names a condition the map cannot show
  • Treats blank space as a limit of the mapmaker's knowledge, not evidence of empty land
Response guidance — after your attempt
  1. Multiply the bar lengths by the scale to get the straight-line distance in kilometres.

  2. Compare that with the 165 km river route, and say in one sentence why the two differ.

  3. Using about 30 km a day, estimate the journey in days, and state what the map does not show that would change that estimate.

  4. Name one thing shown on the map as empty that may not have been, and how you would check.

Six bar lengths at 20 km each gives 120 km, the straight-line distance. The river route is 165 km, about 37 per cent further, because water follows the valley while a straight line ignores terrain. At roughly 30 km a day the trip takes about five and a half days. The map cannot show current, portages around rapids, ice, or whether a load is moving upstream, all of which change the time more than the distance does. It also shows land north of the corridor as blank, which records what the mapmaker knew rather than who lived there; a check would start with the nations' own accounts and with archaeology of village sites, as the dating of the Confederacy did.

Look at the maps and records yourself

Parent / teacher teaching notes

Ask for one because-statement, a dated connection, and a source limitation. Give specific feedback and time to revise. Allow notes, a glossary, oral explanations, or a labeled timeline. Evaluate context, evidence, and reasoning rather than the learner’s politics, religion, cultural identity, or agreement with the model wording. Do not require family disclosure or role-play of slavery or persecution.

The key idea

A timeline and a map both look like neutral pictures of fact, and neither is. Historians still disagree by four centuries about when the Haudenosaunee Confederacy was founded, and the map that fixed the United States' borders in 1783 was drawn in 1755 by a man who got parts of the continent wrong.

Worked examples

Example 1 · Worked evidence case

Calculate the modeled route length and explain why it need not match the straight-line figure.
  1. Multiply the supplied path measurement by its scale.
  2. Keep the result in kilometers.
  3. Distinguish route length from straight-line separation.
Answer: The stipulated route is 6×20=120 km. A winding route can be longer than 90 km of straight-line separation. This assumes the path measurement and scale are correct; neither value alone establishes travel time or historical access.

Example 2 · Compare a second claim after your attempt

A timeline spaces 1776, 1787, and 1861 equally. Are the intervals equal?
  1. Identify the relevant period, institution, or evidence category.
  2. No. The intervals are 11 years and 74 years. Equal spacing can be an ordering aid if labeled; it is not a proportional time scale.
  3. State the narrower conclusion the supplied information can support.
Answer: No. The intervals are 11 years and 74 years. Equal spacing can be an ordering aid if labeled; it is not a proportional time scale.

Avoid these mistakes

Check your understanding

Why is a modern highway map insufficient for locating an eighteenth-century journey?

Discuss the answer

The route network and boundaries may differ. Use a dated map or evidence of the roads, paths, waterways, and political conditions relevant to the journey.

Does unmarked land prove nobody lived there?

Discuss the answer

No. Absence from a particular map is not proof of absence from the landscape. The map’s creator, detail, and purpose limit what can be inferred.

Words to know

context
The time, place, institutions, and conditions surrounding an event.
primary source
Evidence created in the period or activity being investigated; its form does not automatically guarantee accuracy.
interpretation
An explanation of evidence that can be compared with context and other records.
scale
A relationship between distance on a map and distance in the represented setting.
continuity
Persistence of a specified feature over a stated period.

Extend the historical inquiry

If you use a linked record, identify creator, date, audience, purpose, form, and a specific claim it supports. Keep original wording separate from course paraphrase. Seek a different independently produced record that would test an inference.

In the real world

Trace a dated claim to its evidence and distinguish stated aims, institutions, and actual access. Describe people and communities without universal stereotypes.

Exit check

Why must a comparison identify its measure?

Check your explanation after answering

Different measures answer different questions. Total residents and eligible voters cannot be directly treated as the same count; specify categories and relevant exclusions.

Explain your reasoning without notes. If a key idea is missing, revisit the lesson and try again.

Indigenous Nations of North America

Learning goals

Before this unit

Locate the period and region using the supplied background and timeline. Define unfamiliar terms and distinguish a document’s assertion from an established outcome.

Use three flexible 40–45-minute sessions: background and Parts 1–2 with checks; Parts 3–4 and the worked evidence case; then remaining practice, a timeline or labeled model, revision, and the exit check. Complete one short part at a time. Embedded checks count toward the practice set, rather than duplicate homework. Workshop, review, quiz, exams, and flexible support have separate time.

The word most often used for North America before Europeans arrived is “wilderness”. It is the single most misleading word in this course. The continent held hundreds of distinct nations speaking more than three hundred languages north of Mexico — not dialects, but languages as different from one another as English is from Arabic.

Some of those nations built cities. Cahokia, on the Mississippi floodplain across from where St Louis now stands, covered about six square miles and may have held fifteen thousand people around 1100, with estimates running from ten to twenty thousand. London at that date held roughly the same. Its central earthwork, Monks Mound, rises about 100 feet and covers fourteen acres at the base — the largest earthen structure in the Americas north of Mexico.

Others did not build cities because they had better options. On the Northwest Coast the salmon runs supported dense permanent towns without farming at all. On the Plains, people hunted bison on foot with dogs hauling loads. Geography did not dictate one way of living; it offered different ones, and people chose.

Build your understanding

Use three flexible 40–45-minute sessions: the scale and variety of societies before 1492; the population argument and why it matters; then the practice set, a regional comparison, revision and the exit check. Workshop, review, quiz and exams have separate time.

Part 1 · A city on the Mississippi

Cahokia grew fast. Around 1050 the settlement reorganised on a planned grid around a central plaza, in what archaeologists call the “big bang” — a deliberate act of city-building, not slow drift. At its height it held more people than any city in what is now the United States would hold again until Philadelphia passed it around 1780, nearly seven centuries later.

Building Monks Mound took an estimated fifteen million baskets of earth carried by hand. That is not a weekend's work by a few families; it implies organised labour, a food surplus to feed the workers, and authority able to direct both. The surplus came from maize, which had spread north from Mexico over centuries and reached the Mississippi valley in quantity by about 900.

The city drew people in. Analysis of teeth from Cahokia burials shows that a substantial share of those buried there grew up somewhere else, which is what you expect of a place people move to rather than a place that merely grows. Goods arrived from far off: marine shell from the Gulf coast, copper from the Great Lakes, mica from the southern Appalachians.

Cahokia also declined, and the reasons are still argued. Deforestation of the surrounding uplands, flooding, drought after about 1150, and political strain have all been proposed. By around 1350 the site was largely empty. Societies in the Americas rose and fell on their own terms long before anyone arrived from across the Atlantic.

Pause and explain

What does the construction of Monks Mound tell a historian beyond the fact that it is large?

Check your reasoning after answering

That the society was organised. Moving roughly fifteen million baskets of earth by hand requires workers released from food production, a maize surplus to feed them, planning across years, and authority able to direct the effort. The structure is evidence of social organisation as much as of engineering.

Part 2 · Different places, different answers

In the Southwest, the Ancestral Puebloans built in stone. Pueblo Bonito in Chaco Canyon had more than 650 rooms rising to five storeys, and roads ran out from the canyon in dead-straight lines for tens of miles across broken country. Building and maintaining those roads in a dry landscape implies co-ordination between communities far apart.

In the Eastern Woodlands, including what is now New York, farming meant the Three Sisters: maize, beans and squash grown together in one mound. The maize gives the beans a pole to climb, the beans return nitrogen to the soil, and the broad squash leaves shade out weeds and hold moisture. It is a genuinely sophisticated system that European farmers, planting single crops in rows, did not match for centuries.

On the Northwest Coast, cedar and salmon did the work that farming did elsewhere. Communities built plank houses and ocean-going canoes and accumulated enough wealth to hold potlatches, ceremonies at which a host gave away or destroyed goods to establish standing. None of this fits a simple ladder from hunting to farming to civilisation, which is why that ladder is a poor way to think about the continent.

Pause and explain

Why does the Three Sisters system suggest accumulated agricultural knowledge rather than luck?

Check your reasoning after answering

Because the three plants solve each other's problems in ways that only show up over many seasons. Maize supplies a climbing pole, beans restore nitrogen that maize strips out, and squash leaves suppress weeds and hold soil moisture. Combining them in one mound is a worked-out answer to soil exhaustion, not a chance pairing.

Part 3 · How many people, and why the number is fought over

Estimates of the population of North America north of Mexico in 1492 range from about two million to about eighteen million. For the Americas as a whole, serious estimates run from roughly forty million to over a hundred million. These are not small disagreements; the high figure is nine times the low one.

The spread exists because the evidence is indirect. There was no census. Historians work from the carrying capacity of farmland, from the number of village sites found and their size, from early European accounts that were often written decades after the first epidemics had already passed through, and from later counts worked backwards through estimated death rates. Each method carries its own assumptions, and small changes in those assumptions multiply.

The argument matters because the number changes the story. If the continent held two million people, European settlement looks like expansion into thin country. If it held eighteen million, and disease removed most of them before most colonists arrived, then what the settlers found was not empty land but emptied land — and the difference between those two words is the difference between two versions of American history.

Pause and explain

A historian says the low and high population estimates “tell different stories”. What does that mean?

Check your reasoning after answering

That the figure changes how settlement is understood. Around two million makes colonisation look like movement into sparsely held country. Around eighteen million, with epidemics arriving ahead of most settlers, makes the same land recently emptied rather than naturally empty — so the number is not a detail but the frame for everything after it.

Part 4 · Nations, not tribes in general

It is worth being careful with words from the start. “Native Americans” covers hundreds of peoples who were as different from one another as the Portuguese are from the Finns, and who often did not regard themselves as having anything in common. Mohawk and Lenape lived a few days apart and spoke unrelated languages.

The nations of what is now New York State make the point locally. The five Haudenosaunee nations spoke related Iroquoian languages and farmed in palisaded villages of longhouses; their neighbours down the Hudson and along the coast — the Lenape, the Mahican, the Munsee — spoke Algonquian languages, unrelated to Iroquoian, and lived in smaller, more mobile settlements. Two very different ways of organising life, within a few days' travel of each other.

They were also in constant contact. Copper from Lake Superior, obsidian from the Rockies, shells from the Gulf and the Atlantic coast all turn up hundreds of miles from where they originated, which means long-distance exchange routes were running for centuries before 1492. Goods moved, and so did ideas, crops and people.

Nor were these nations frozen in place. The Haudenosaunee Confederacy, the subject of the next unit, was itself formed at some point in this period by nations that had been fighting one another; Cahokia rose around 1050 and was gone by about 1350; Chaco was abandoned after roughly 1150 and its people moved to the Rio Grande and to Hopi and Zuni country. Three centuries of change happened here before any of it was written down.

So when a European ship appeared off the coast, it did not arrive at an isolated place. It arrived at the edge of a continent that was crowded, connected and politically complicated, and the newcomers were drawn into alliances and rivalries that had been running long before they came. That is the subject of the next three chapters.

Pause and explain

Lake Superior copper is found at sites a thousand miles away. What does that prove, and what does it not?

Check your reasoning after answering

It proves goods moved over long distances, through trade or exchange networks operating well before 1492. It does not prove that any single person travelled the whole way, that the groups at either end knew of each other, or that the exchange was commercial in a modern sense. Objects can travel further than the people who hand them on.

Apply the whole unit · Test the word “wilderness”

A nineteenth-century textbook describes North America in 1492 as “a vast wilderness, inhabited by scattered tribes of hunters.” You have four pieces of evidence: Cahokia's population of around 15,000 in 1100; Pueblo Bonito's 650 rooms and its road network; the Three Sisters planting system; and the presence of Lake Superior copper at distant sites.

Your task

Use the evidence to assess each part of the sentence, and write a replacement a historian could defend.

What your response should show

  • Tests the three claims separately against named evidence
  • Uses Cahokia or Chaco for scale and the copper for connection
  • Distinguishes what the author might have seen from what the sentence accomplished
  • Produces a replacement sentence that the evidence actually supports
Response guidance — after your attempt
  1. Separate the sentence's three claims: that the land was wilderness, that people were scattered, and that they lived by hunting.

  2. Test each against the four pieces of evidence, naming which evidence bears on which claim.

  3. Explain what the author could have believed in good faith, and what the sentence was doing for its nineteenth-century readers.

  4. Write one replacement sentence that the evidence supports.

“Wilderness” fails against Cahokia and Chaco: cities of thousands with planned layouts and engineered roads are not wilderness. “Scattered” fails against both those sites and against the copper, which shows connected exchange over a thousand miles. “Hunters” fails against the Three Sisters, a worked-out farming system, though hunting mattered greatly on the Plains and in the subarctic. In good faith the author may have been describing land that epidemics had already emptied, since disease ran ahead of settlement; but the sentence also did work for its readers, because land described as empty is easier to claim. A defensible replacement: “In 1492 North America held hundreds of nations, some farming in large permanent towns, others hunting or fishing, linked by trade routes that moved goods a thousand miles.”

See the evidence yourself

Parent / teacher teaching notes

Ask for one because-statement, a dated connection, and a source limitation. Give specific feedback and time to revise. Allow notes, a glossary, oral explanations, or a labeled timeline. Evaluate context, evidence, and reasoning rather than the learner’s politics, religion, cultural identity, or agreement with the model wording. Do not require family disclosure or role-play of slavery or persecution.

The key idea

Before 1492 North America held hundreds of nations speaking more than three hundred languages, with cities, road networks, irrigation and long-distance trade. Cahokia, near modern St Louis, held perhaps 15,000 people around 1100 — about the size of London at the same date.

Worked examples

Example 1 · Worked evidence case

Describe a supported comparison and reject a claim that each community used only one food source.
  1. Identify the different traces preserved.
  2. Separate detected activities from complete inventories.
  3. Seek other remains and context before generalizing.
Answer: The traces support fishing-related activity at the coastal site and maize cultivation at the inland site. They do not establish exclusive diets, every household’s work, or the absence of exchange. Preservation and excavation affect what is found. A comparison should identify those limits rather than rank communities by one technology.

Example 2 · Compare a second claim after your attempt

A textbook image shows one house type. Does it represent all Indigenous nations?
  1. Identify the relevant period, institution, or evidence category.
  2. No. House forms varied across regions, nations, periods, and circumstances. Identify the image’s setting and compare dated examples instead of treating one form as universal.
  3. State the narrower conclusion the supplied information can support.
Answer: No. House forms varied across regions, nations, periods, and circumstances. Identify the image’s setting and compare dated examples instead of treating one form as universal.

Avoid these mistakes

Check your understanding

Why should a modern state map be used cautiously?

Discuss the answer

Its borders belong to a later political system. It can help locate a place but cannot establish earlier community boundaries or authority.

Why is “same climate means same culture” inaccurate?

Discuss the answer

Climate is one influence, while histories, institutions, knowledge, choices, and exchange also matter. Similar environments do not establish identical societies.

Words to know

context
The time, place, institutions, and conditions surrounding an event.
primary source
Evidence created in the period or activity being investigated; its form does not automatically guarantee accuracy.
interpretation
An explanation of evidence that can be compared with context and other records.
Indigenous
Describing peoples with longstanding relationships to a place before later colonization; particular identities should be named.
archaeology
The study of material traces in context to investigate past human activity.

Extend the historical inquiry

If you use a linked record, identify creator, date, audience, purpose, form, and a specific claim it supports. Keep original wording separate from course paraphrase. Seek a different independently produced record that would test an inference.

In the real world

Trace a dated claim to its evidence and distinguish stated aims, institutions, and actual access. Describe people and communities without universal stereotypes.

Exit check

Does adopting a traded metal tool establish loss of identity?

Check your explanation after answering

No. A changed technology can coexist with continuing language, relationships, institutions, and self-identification. Further evidence is needed for a claim about identity.

Explain your reasoning without notes. If a key idea is missing, revisit the lesson and try again.

Haudenosaunee & Neighboring Nations in New York

Learning goals

Before this unit

Locate the period and region using the supplied background and timeline. Define unfamiliar terms and distinguish a document’s assertion from an established outcome.

Use three flexible 40–45-minute sessions: background and Parts 1–2 with checks; Parts 3–4 and the worked evidence case; then remaining practice, a timeline or labeled model, revision, and the exit check. Complete one short part at a time. Embedded checks count toward the practice set, rather than duplicate homework. Workshop, review, quiz, exams, and flexible support have separate time.

The people who held most of what is now upstate New York call themselves Haudenosaunee, People of the Longhouse. The French called them Iroquois. They were five nations — Mohawk, Oneida, Onondaga, Cayuga and Seneca — and from the early 1700s six, when the Tuscarora moved north after war in Carolina and were accepted about 1722.

The metaphor in the name is also the structure. The Confederacy imagined itself as one enormous longhouse stretching across the state, with the Mohawk as Keepers of the Eastern Door, the Seneca as Keepers of the Western Door, and the Onondaga at the centre keeping the council fire. A visitor from the east dealt first with the Mohawk, exactly as a visitor to a longhouse enters at one end.

They were bound by the Great Law of Peace, brought, in their account, by the Peacemaker and Hiawatha to nations locked in blood feud. It is a constitution: it sets out who sits in council, how many from each nation, how decisions are reached, how a chief is chosen and how he is removed.

Build your understanding

Use three flexible 40–45-minute sessions: the Great Law and the structure of the Grand Council; clan mothers, longhouses and the Three Sisters; then the practice set, a comparison of decision-making systems, revision and the exit check. Workshop, review, quiz and exams have separate time.

Part 1 · Fifty chiefs and one fire

The Grand Council met at Onondaga, near modern Syracuse, and seated fifty royaner — usually translated as chiefs or sachems, though the word means something closer to “good men” or counsellors. The seats were not shared out by population. The Onondaga held fourteen, the Cayuga ten, the Mohawk and Oneida nine each, and the Seneca eight, which meant the largest nation did not have the most votes.

That was deliberate, because the Council did not decide by majority. It worked by consensus: a question passed back and forth between groups of nations in a set order until a position emerged that nobody would block. The Mohawk and Seneca, the elder brothers, considered a matter first; it passed to the Oneida and Cayuga, the younger brothers; the Onondaga, as firekeepers, could send it back for more discussion and confirmed the result.

The Great Law also fixed how business was conducted. A council opened with the Words Before All Else, a long thanksgiving addressed to the natural world, and proceedings were recorded in wampum — belts of white and purple shell beads whose patterns held the terms of an agreement. A wampum belt was not decoration or money; it was the record, read aloud by someone trained to carry it, and a treaty was not complete until the belt was exchanged.

Consensus is slow, and that was understood as a feature. A decision nobody would block is a decision that does not need enforcing afterwards, which matters when the Confederacy had no police, no standing army and no power to tax. Nations followed the Council because they had agreed, not because they could be made to.

Pause and explain

The Onondaga held fourteen seats and the Seneca eight, though the Seneca were more numerous. Why did this not give Onondaga control?

Check your reasoning after answering

Because the Council did not count votes. A matter moved between the elder brothers, the younger brothers and the firekeepers until nobody would block it, so no nation could carry a question by weight of seats. The numbers set who deliberated where in the sequence, not who could outvote whom.

Part 2 · The women who chose the chiefs

Haudenosaunee society was matrilineal: a person belonged to their mother's clan, children belonged to their mother's family, and longhouses and fields belonged to the women of the clan. A man who married moved into his wife's longhouse, where he remained a member of his own mother's clan.

This had direct political consequences. The head woman of each clan, the clan mother, nominated the man who would fill her clan's seat on the Grand Council. She instructed him. If he failed in his duties — if he ignored the people, or acted for himself — she warned him three times, and could then remove him and name another. The procedure for this is set out in the Great Law, not left to custom.

Women also decided questions that look military. A clan mother could withhold the food supplies a war party needed, which in practice was a veto on the expedition, and captives taken in raids were brought to the clan mothers, who chose whether a captive was adopted into the family of someone lost or put to death. Adoption was common enough that the nations absorbed substantial numbers of outsiders.

Set that against the colonies arriving in the next chapter, where a married woman generally could not own property in her own name, could not vote, and had no formal political voice at all. Visitors noticed. When Haudenosaunee delegates met colonial officials, they sometimes asked where the women were, and the question was not rhetorical: they could not understand how a decision could be made without them.

Pause and explain

What is the practical difference between a clan mother nominating a chief and simply advising him?

Check your reasoning after answering

The power to remove him. She selects who holds the seat, instructs him, and after three warnings can take the seat away and name a successor. That is authority over the office itself, written into the Great Law, not influence exercised through persuasion.

Part 3 · Longhouses, fields and the Three Sisters

A longhouse was a frame of bent saplings sheathed in elm bark, commonly sixty to a hundred feet long, housing several related families along a central corridor of shared hearths. Villages of a few dozen longhouses stood behind timber palisades and held several hundred to a couple of thousand people, moving every ten to twenty years as soil and firewood were used up.

The fields around them grew the Three Sisters together, and the women owned both the fields and what came out of them. Maize, beans and squash in one mound fed a population large enough to support the political structure above it; a confederacy needs a food surplus as much as a city does.

Men hunted, traded and fought, often far from home for long stretches. That division — women holding the village, the fields, the clans and the nomination of chiefs; men away at war and diplomacy — is why the two halves of Haudenosaunee authority sat where they did. It was not an accident of custom but a structure that followed from how the work was organised.

Pause and explain

Why did women's ownership of the fields matter politically and not only economically?

Check your reasoning after answering

Because it placed the food supply, the longhouses and the clans in the same hands that nominated the Council's chiefs. Authority over the village's permanent resources sat with the people who stayed with them, while men were frequently away hunting, trading or at war. The political structure followed the division of work.

Part 4 · Why the Confederacy mattered to everyone else

From the 1600s the Haudenosaunee sat between the Dutch and later English on the Hudson and the French on the St Lawrence, in control of the routes west. Both European powers needed them more than they needed either, and both spent a century trying to secure the alliance. That position is the single most important political fact of this region before 1776.

Colonial officials studied the Confederacy closely. At Lancaster in 1744 the Onondaga speaker Canassatego told commissioners from three colonies that his people had grown strong by uniting and advised them to do the same. Benjamin Franklin printed the speech, and in 1754 he proposed the Albany Plan of Union, citing the Six Nations as proof that colonies could combine. Historians disagree about how much the Great Law shaped the later United States Constitution, and the honest answer is that the Albany connection is documented while a direct line to 1787 is argued rather than proven.

The Confederacy's power ended with the Revolution, when the Six Nations split between the sides and the war came to their own country. That is a story for chapter three. What matters now is that the nations the Dutch meet in the next chapter were not scattered bands but an organised power with a constitution, a capital and a foreign policy.

Pause and explain

What can be said with confidence about Haudenosaunee influence on later American government, and what cannot?

Check your reasoning after answering

Documented: Canassatego urged the colonies to unite in 1744, Franklin printed it, and Franklin cited the Six Nations when proposing the Albany Plan in 1754. Not established: that the Great Law shaped the 1787 Constitution directly. The first rests on records; the second is an argument historians still dispute.

Apply the whole unit · Compare two ways of reaching a decision

The Grand Council reached decisions by consensus among fifty chiefs seated by nation, with clan mothers able to remove a chief after three warnings. A colonial assembly decided by majority vote among elected men who owned property, with no mechanism to remove a member between elections.

Your task

Compare the two systems on speed, on how binding a decision is, and on who is included.

What your response should show

  • Identifies majority voting as faster and consensus as deliberately slow
  • Connects the binding force of consensus to the absence of coercive power
  • Names clan mothers' authority against colonial women's exclusion
  • Credits a real strength to each system rather than ranking one above the other
Response guidance — after your attempt
  1. Say which system reaches a decision faster, and why the slower one was built that way deliberately.

  2. Explain which decision is harder to ignore afterwards, given that the Confederacy had no army or tax power.

  3. Compare who takes part: name a group with formal authority in one system and none in the other.

  4. Write two sentences, one naming a genuine strength of each system.

The assembly is faster: a majority settles a question in one sitting, while consensus passes a matter between elder brothers, younger brothers and firekeepers until nobody blocks it. But the Council's decision binds harder, because every nation has already agreed and the Confederacy had no army, police or taxes with which to compel anyone. On inclusion, clan mothers nominated, instructed and could remove the chiefs, while colonial women could not vote, hold office or in most cases own property once married. Strength of consensus: a decision that needs no enforcement. Strength of majority: it can act quickly when a question will not wait.

Read the Haudenosaunee record yourself

Parent / teacher teaching notes

Ask for one because-statement, a dated connection, and a source limitation. Give specific feedback and time to revise. Allow notes, a glossary, oral explanations, or a labeled timeline. Evaluate context, evidence, and reasoning rather than the learner’s politics, religion, cultural identity, or agreement with the model wording. Do not require family disclosure or role-play of slavery or persecution.

The key idea

Five nations that had been at war bound themselves under the Great Law of Peace into a confederacy governed by a council of fifty chiefs at Onondaga. The chiefs were nominated, instructed and could be removed by clan mothers, and for two centuries the Confederacy was the strongest political power in the northeast.

Worked examples

Example 1 · Worked evidence case

Correct the draft and identify what would be needed to compare political decisions.
  1. Distinguish membership from language classification.
  2. Locate decisions in a particular nation or shared institution.
  3. Seek dated council or diplomatic records.
Answer: Confederacy membership describes a political relationship, while a language-family list does not by itself establish shared government. The six nations also retain distinct identities. A comparison of decisions needs dated evidence about the relevant councils, responsibilities, and participants, not an assumption that a category speaks with one voice.

Example 2 · Compare a second claim after your attempt

Can one council record represent every household’s view?
  1. Identify the relevant period, institution, or evidence category.
  2. It may document a council decision or a recorded speaker. It does not automatically show every household’s opinion; identify its procedure, participants, purpose, and other available voices.
  3. State the narrower conclusion the supplied information can support.
Answer: It may document a council decision or a recorded speaker. It does not automatically show every household’s opinion; identify its procedure, participants, purpose, and other available voices.

Avoid these mistakes

Check your understanding

Why is “Algonquian” not the name of one unified government?

Discuss the answer

It describes a language family with multiple peoples and political communities. A claim about authority requires evidence about the particular nation and period.

Does comparison prove the U.S. Constitution copied the whole confederacy system?

Discuss the answer

No. Resemblance is not proof of a complete borrowing. Identify a specific proposed influence and examine dated evidence while preserving differences in institutions and traditions.

Words to know

context
The time, place, institutions, and conditions surrounding an event.
primary source
Evidence created in the period or activity being investigated; its form does not automatically guarantee accuracy.
interpretation
An explanation of evidence that can be compared with context and other records.
confederacy
A relationship among political communities that share some decisions while retaining distinct identities.
wampum
Shell-bead items used in particular cultural and diplomatic practices; meanings require community context.

Extend the historical inquiry

If you use a linked record, identify creator, date, audience, purpose, form, and a specific claim it supports. Keep original wording separate from course paraphrase. Seek a different independently produced record that would test an inference.

In the real world

Trace a dated claim to its evidence and distinguish stated aims, institutions, and actual access. Describe people and communities without universal stereotypes.

Exit check

What is wrong with saying that Native government ended when New York appeared on a map?

Check your explanation after answering

A map’s later political label does not prove the disappearance of Native nations, institutions, or authority. Compare dated community and diplomatic evidence rather than infer disappearance from cartography.

Explain your reasoning without notes. If a key idea is missing, revisit the lesson and try again.

Early Encounters, Columbian Exchange & Consequences

Learning goals

Before this unit

Locate the period and region using the supplied background and timeline. Define unfamiliar terms and distinguish a document’s assertion from an established outcome.

Use three flexible 40–45-minute sessions: background and Parts 1–2 with checks; Parts 3–4 and the worked evidence case; then remaining practice, a timeline or labeled model, revision, and the exit check. Complete one short part at a time. Embedded checks count toward the practice set, rather than duplicate homework. Workshop, review, quiz, exams, and flexible support have separate time.

The exchange that began in 1492 is usually taught as a list of foods, and the list is worth knowing. Westward across the Atlantic went wheat, rice, sugar cane, cattle, pigs, sheep, chickens and horses. Eastward went maize, potatoes, tomatoes, beans, squash, peanuts, cacao, chillies, vanilla and tobacco.

The consequences were not symmetrical. The crops that went east fed people: the potato produces more calories per acre than any European grain and grows in poor soil, and by the 1700s it had become a staple from Ireland to Russia, supporting a population rise that reshaped the continent.

What went west included smallpox, measles, influenza, typhus and later yellow fever, against which people in the Americas had no acquired immunity. In region after region the dying began before most Europeans arrived, because disease travelled along the trade routes faster than ships could carry settlers.

Build your understanding

Use three flexible 40–45-minute sessions: what moved in each direction and what it did; the epidemics and why they fell so unevenly; then the practice set, a consequence-tracing task, revision and the exit check. Workshop, review, quiz and exams have separate time.

Part 1 · Why the diseases went one way

The imbalance was not about strength or cleanliness; it was about history and livestock. Smallpox, measles, influenza and tuberculosis all descend from diseases that crossed into humans from domesticated herd animals — cattle, pigs, sheep, chickens — kept in close quarters in Europe and Asia for thousands of years. Those populations had been dying from these diseases for centuries and carried hard-won resistance.

The Americas had almost no domesticated herd animals. There were llamas and alpacas in the Andes, dogs and turkeys elsewhere, and that is nearly the whole list. The crowd diseases never arose, so nobody had met them, and when they came, they came all at once to people of every age, including the adults who grew the food and led the community.

Nor was it a single event. A community that survived smallpox might meet measles a decade later, then influenza, then smallpox again in a generation with no immunity. The Haudenosaunee were struck repeatedly through the 1630s and 1640s, losing by some estimates half their people, and the wars they fought with neighbouring nations in those decades are partly a response to that loss — captives were adopted to rebuild populations that disease had cut down.

That last point is easy to miss. A disease that kills across all ages at the same time does not just reduce a population; it removes the people who plant, hunt, teach and govern in a single season. A village could survive an epidemic and still lose the knowledge and the harvest it needed for the following year.

Pause and explain

Why did the great killing diseases travel from Europe to the Americas and almost none the other way?

Check your reasoning after answering

Because they came from domesticated herd animals. Cattle, pigs, sheep and poultry kept densely for millennia in Eurasia bred the crowd diseases, and those populations had built up resistance. The Americas had llamas, alpacas, dogs and turkeys and nothing kept at that density, so the diseases never arose there and no resistance existed to meet them.

Part 2 · Dying before the settlers arrived

Smallpox reached Hispaniola by 1518 and the mainland soon after, and from there it moved along the same Indigenous trade routes that had carried copper and shell for centuries. People fleeing an outbreak carried it with them. The result is that epidemics repeatedly reached regions years or decades before any European did.

The New England coast is the clearest case. Between 1616 and 1619 an epidemic swept the shoreline, and by the most-cited estimates it killed between 75 and 90 per cent of the people in some communities. When the Mayflower passengers landed in 1620 they found cleared fields, stored seed corn and abandoned village sites, and took this as providence. They were walking into the aftermath of a catastrophe that had finished the year before they sailed.

In New York the same pattern ran up the Hudson and the Mohawk. Dutch traders at Fort Orange, the post that became Albany, recorded epidemics among the nations they dealt with within a few years of establishing themselves in the 1620s. The fur trade that drew the Dutch inland was also a channel along which infection travelled, so the commercial relationship and the dying are not separable.

Estimates of total mortality across the Americas over the first century and a half range from about 50 to about 90 per cent, depending on the region and on which starting population a historian accepts — the disagreement you met in the previous unit. Whichever end of the range is right, this is among the largest losses of human life in recorded history, and most of it was not deliberate killing. It was biology moving faster than anyone understood.

Pause and explain

The Mayflower passengers found cleared fields and stored corn in 1620. Why is “the land was waiting empty” the wrong conclusion?

Check your reasoning after answering

Because the fields had been cleared and planted by people who had died in the epidemic of 1616 to 1619, which killed most of the coastal population before the ship sailed. The emptiness was three or four years old. The settlers were not finding unused land but the remains of farms whose owners had recently been alive.

Part 3 · What the exchange did to Europe and Africa

Going east, the crops changed what populations could be fed. The potato yields more food per acre than wheat or rye and tolerates cold, wet, poor ground, so it turned marginal land productive across northern Europe. Maize did similar work in southern Europe, Africa and China. Historians connect these crops to the sustained population growth of the 1700s, though they argue about how much of it to credit to them.

The dependence could also be lethal. Ireland came to rely on the potato so heavily that when a water mould destroyed the crop from 1845, about a million people died and a million more emigrated, many to New York. A crop that had crossed the Atlantic three centuries earlier produced one of the largest migrations into the city, which you will meet again in chapter five.

The third direction is the one most often left out. Sugar grew well in the Caribbean and Brazil, demanded enormous labour, and the Indigenous workforce had collapsed. European planters turned to the Atlantic slave trade, which carried roughly 12.5 million captive Africans onto ships between 1501 and 1866, of whom about 10.7 million survived the crossing. The exchange of crops and the trade in people are the same history, not two adjacent ones.

Pause and explain

Explain the chain connecting an American crop to the Atlantic slave trade.

Check your reasoning after answering

Sugar cane grown in the Caribbean and Brazil needed vast labour on plantations. Epidemics had destroyed much of the Indigenous population that planters first forced into that work, so they bought captive Africans instead — about 12.5 million embarked between 1501 and 1866. The demand for a crop and the trade in people are links in one chain.

Part 4 · Horses, and a world remade twice

Horses had evolved in the Americas and died out there thousands of years earlier. The Spanish brought them back, and after the Pueblo Revolt of 1680 drove the Spanish temporarily out of New Mexico, large numbers spread north through Indigenous trade and raiding onto the Great Plains.

What followed was a transformation Europeans had nothing to do with directing. Nations including the Comanche, the Lakota and the Cheyenne rebuilt their lives around the horse, hunting bison at a scale impossible on foot and dominating a vast territory. The Comanche in particular built a power that checked Spanish, Mexican and later American expansion for well over a century.

The same is true of other borrowings. Haudenosaunee and Algonquian nations took up iron axes, brass kettles and woollen duffel cloth quickly, not because they were dazzled but because the goods did a job better; brass kettles were often cut up and reworked into arrowheads and ornaments rather than used as pots. Choosing what to adopt, and what to make of it, is not the behaviour of people to whom things simply happen.

This matters for how you read the whole period. The exchange was not something done to passive people; nations took what arrived, judged it and used it for their own ends. The horse culture of the Plains, which Americans later treated as timeless and ancient, was in fact younger than the colony at Jamestown — built after 1680, out of an animal that arrived by accident of empire.

Pause and explain

Why is it a mistake to describe Plains horse culture as ancient?

Check your reasoning after answering

Because it is post-contact. Horses died out in the Americas long before and returned with the Spanish, spreading onto the Plains in numbers mainly after the Pueblo Revolt of 1680. The nations who built their hunting, warfare and economy around them did so within the colonial period — later than Jamestown, not before it.

Apply the whole unit · Trace a consequence in both directions

Four items crossed the Atlantic after 1492: the potato going east, smallpox going west, sugar cane going west, and the horse returning west. Each set off a chain of consequences lasting centuries.

Your task

For two of the four, trace the chain from arrival to a consequence at least a century later, and say which link is best evidenced.

What your response should show

  • Traces two chains in order, one in each direction, with dates
  • Separates a well-evidenced link from a disputed one in each chain
  • Uses specific figures rather than saying many or most
  • Names a consequence that persists into the present
Response guidance — after your attempt
  1. Pick two items, one moving in each direction.

  2. Write the chain in order, naming a date at each step you can date.

  3. Identify the link in each chain that rests on the firmest evidence, and the one historians argue about.

  4. State one consequence still visible today.

Potato east: reaches Europe in the 1500s; yields more calories per acre than grain on poor ground; supports population growth through the 1700s; Ireland becomes dependent; the crop fails from 1845 and about a million die while a million emigrate, many to New York. Firmest link: the famine mortality and emigration, which are counted. Argued: how much of the population growth to credit to the potato rather than to other causes. Smallpox west: reaches Hispaniola by 1518; spreads along Indigenous trade routes ahead of settlers; kills 75 to 90 per cent along the New England coast between 1616 and 1619; the Mayflower lands in 1620 among cleared fields. Firmest link: the sequence of dates. Argued: the mortality percentage, which depends on an estimated starting population. Still visible: New York's Irish-descended population, and which nations hold land in New England.

Read the records yourself

Parent / teacher teaching notes

Ask for one because-statement, a dated connection, and a source limitation. Give specific feedback and time to revise. Allow notes, a glossary, oral explanations, or a labeled timeline. Evaluate context, evidence, and reasoning rather than the learner’s politics, religion, cultural identity, or agreement with the model wording. Do not require family disclosure or role-play of slavery or persecution.

The key idea

After 1492 plants, animals, people and diseases crossed the Atlantic in both directions and remade both sides. The potato and maize helped European populations grow; smallpox and measles killed a majority of the people in many American regions, often arriving years before any colonist did.

Worked examples

Example 1 · Worked evidence case

Explain why output alone cannot establish a universal benefit.
  1. Identify what output measures.
  2. Identify the separate evidence about coercion.
  3. Compare effects on particular people and investigate access and burdens.
Answer: More sale output establishes an increase in that measured activity under the stipulated conditions. It does not establish the welfare of coerced workers or every community. The labor requirement shows why economic totals and freedom are distinct. A fuller account needs labor conditions, distribution of returns, food access, and community evidence.

Example 2 · Compare a second claim after your attempt

If a community adopted an introduced animal, did it merely copy another society?
  1. Identify the relevant period, institution, or evidence category.
  2. No. Adoption can involve adapting technology to local knowledge, institutions, and needs. Investigate the particular use and its consequences instead of assuming passive or identical behavior.
  3. State the narrower conclusion the supplied information can support.
Answer: No. Adoption can involve adapting technology to local knowledge, institutions, and needs. Investigate the particular use and its consequences instead of assuming passive or identical behavior.

Avoid these mistakes

Check your understanding

Why is “empty land discovered in 1492” inaccurate?

Discuss the answer

The Caribbean and other American regions had inhabitants and histories. European arrival created encounters; it did not create the people or land that were already there.

What is missing from a list saying “horses arrived, society changed”?

Discuss the answer

Explain who acquired and used horses, how they affected movement or work in that place and period, and which evidence supports the claimed consequences.

Words to know

context
The time, place, institutions, and conditions surrounding an event.
primary source
Evidence created in the period or activity being investigated; its form does not automatically guarantee accuracy.
interpretation
An explanation of evidence that can be compared with context and other records.
Columbian Exchange
Transatlantic and wider movement of organisms, people, and knowledge intensified after European contact with the Americas.
coercion
Pressure or force that removes or severely restricts meaningful choice.

Extend the historical inquiry

If you use a linked record, identify creator, date, audience, purpose, form, and a specific claim it supports. Keep original wording separate from course paraphrase. Seek a different independently produced record that would test an inference.

In the real world

Trace a dated claim to its evidence and distinguish stated aims, institutions, and actual access. Describe people and communities without universal stereotypes.

Exit check

Why should forced transportation be distinguished from moving a crop?

Check your explanation after answering

It concerns people deprived of liberty and subjected to coercion, not simply the circulation of goods. Authority, consent, resistance, and harms are essential to the explanation.

Explain your reasoning without notes. If a key idea is missing, revisit the lesson and try again.

Problem 1

Invented teaching records: a register lists 12 enrolled learners in May; an attendance sheet for one May day marks 9 present. Neither is a historical quotation. Explain why the records can agree and identify what they cannot establish about the whole term.
Answer and explanation

The register lists 12 learners, while 9 were present on one recorded day. Three were not marked present that day, assuming the same roster and complete marking. That does not show why they were absent or their attendance throughout the term. More dates and information about the recording method would test a broader claim.

Identify the different measures: enrollment and daily presence.

Compare the same period without treating the measures as identical.

Seek additional dated attendance records for a term-wide claim.

Response criteria

  • Describe the historical context and institutions accurately.
  • Connect relevant evidence with an explained claim or calculation.
  • Represent particular perspectives without stereotypes or invented testimony.
  • Identify an assumption, evidentiary limit, or distinction that qualifies the conclusion.

Problem 2

Why is “Did the canal improve every life?” difficult to answer with one freight receipt?
Answer and explanation

The receipt concerns a particular shipment and cost. It cannot establish every person’s earnings, safety, displacement, or other experience; specify a narrower claim and seek additional records.

Problem 3

Invented map exercise: a route is marked as 6 cm long along the drawn path; the map scale is 1 cm to 20 km. A modern straight-line measurement is 90 km. Calculate the modeled route length and explain why it need not match the straight-line figure.
Answer and explanation

The stipulated route is 6×20=120 km. A winding route can be longer than 90 km of straight-line separation. This assumes the path measurement and scale are correct; neither value alone establishes travel time or historical access.

Multiply the supplied path measurement by its scale.

Keep the result in kilometers.

Distinguish route length from straight-line separation.

Response criteria

  • Describe the historical context and institutions accurately.
  • Connect relevant evidence with an explained claim or calculation.
  • Represent particular perspectives without stereotypes or invented testimony.
  • Identify an assumption, evidentiary limit, or distinction that qualifies the conclusion.

Problem 4

Why is a modern highway map insufficient for locating an eighteenth-century journey?
Answer and explanation

The route network and boundaries may differ. Use a dated map or evidence of the roads, paths, waterways, and political conditions relevant to the journey.

Problem 5

Invented comparison: one coastal site preserves fishing equipment and shell remains; one inland site preserves maize remains and planting tools. Dates overlap, but the full diets and trade routes are unknown. Describe a supported comparison and reject a claim that each community used only one food source.
Answer and explanation

The traces support fishing-related activity at the coastal site and maize cultivation at the inland site. They do not establish exclusive diets, every household’s work, or the absence of exchange. Preservation and excavation affect what is found. A comparison should identify those limits rather than rank communities by one technology.

Identify the different traces preserved.

Separate detected activities from complete inventories.

Seek other remains and context before generalizing.

Response criteria

  • Describe the historical context and institutions accurately.
  • Connect relevant evidence with an explained claim or calculation.
  • Represent particular perspectives without stereotypes or invented testimony.
  • Identify an assumption, evidentiary limit, or distinction that qualifies the conclusion.

Problem 6

Why should a modern state map be used cautiously?
Answer and explanation

Its borders belong to a later political system. It can help locate a place but cannot establish earlier community boundaries or authority.

Problem 7

Invented study notes: Record A identifies six member nations in a confederacy; Record B identifies several neighboring communities whose languages belong to a family. A draft calls both lists single governments. Correct the draft and identify what would be needed to compare political decisions.
Answer and explanation

Confederacy membership describes a political relationship, while a language-family list does not by itself establish shared government. The six nations also retain distinct identities. A comparison of decisions needs dated evidence about the relevant councils, responsibilities, and participants, not an assumption that a category speaks with one voice.

Distinguish membership from language classification.

Locate decisions in a particular nation or shared institution.

Seek dated council or diplomatic records.

Response criteria

  • Describe the historical context and institutions accurately.
  • Connect relevant evidence with an explained claim or calculation.
  • Represent particular perspectives without stereotypes or invented testimony.
  • Identify an assumption, evidentiary limit, or distinction that qualifies the conclusion.

Problem 8

Why is “Algonquian” not the name of one unified government?
Answer and explanation

It describes a language family with multiple peoples and political communities. A claim about authority requires evidence about the particular nation and period.

Problem 9

Invented teaching case: a newly introduced crop increases a farm’s sale output, while imposed labor requirements on another community also increase. A summary says the new crop helped everyone. Explain why output alone cannot establish a universal benefit.
Answer and explanation

More sale output establishes an increase in that measured activity under the stipulated conditions. It does not establish the welfare of coerced workers or every community. The labor requirement shows why economic totals and freedom are distinct. A fuller account needs labor conditions, distribution of returns, food access, and community evidence.

Identify what output measures.

Identify the separate evidence about coercion.

Compare effects on particular people and investigate access and burdens.

Response criteria

  • Describe the historical context and institutions accurately.
  • Connect relevant evidence with an explained claim or calculation.
  • Represent particular perspectives without stereotypes or invented testimony.
  • Identify an assumption, evidentiary limit, or distinction that qualifies the conclusion.

Problem 10

Why is “empty land discovered in 1492” inaccurate?
Answer and explanation

The Caribbean and other American regions had inhabitants and histories. European arrival created encounters; it did not create the people or land that were already there.

Browse all courses