History Capstone: Build, Test & Revise an Explanation · Grade 7 Social Studies

Part 1 · What a claim has to have

Start with a claim that is too broad and watch what is wrong with it: the Civil War was about slavery. It is true, it is worth knowing, and as a claim it is almost useless, because it names no period, proposes no mechanism, and there is nothing you could show the writer that would make them revise it rather than restate it.

Now a usable version: the seceding states left over slavery, as their own declarations of causes say in 1860 and 1861, but the Union's war aim in 1861 was the preservation of the Union, which is why emancipation arrived as a military measure in 1863 rather than as a war aim in 1861.

That version names two things and dates them. It proposes a mechanism, the war power, for why the timing went the way it did. And it is vulnerable: if you could show that Lincoln had announced emancipation as a war aim in 1861, or that the declarations of causes talk mostly about tariffs, the claim would be in trouble. Being vulnerable is what makes it worth writing down.

The test to apply to your own first draft is simple. Ask what evidence would make you change your mind. If you cannot name any, you have not yet written a claim -- you have written a sentiment, and the next step is to make it specific enough to be wrong.

One more thing a claim needs, and it is the one most often left out: a mechanism. Saying that the cotton gin caused slavery to expand is a correlation until you say how -- that cleaning was the bottleneck, that removing it made short-staple cotton worth planting inland, and that planting it inland required field labour the domestic slave trade then supplied. The chain is the argument. Without it you have two things that happened near each other in time.

Part 2 · Looking for what does not fit

The difference between a strong explanation and a weak one is almost never the amount of supporting evidence. Anyone can accumulate that. It is whether the writer went looking for the evidence that cuts the other way before a reader did.

Take a claim this course makes it easy to reach: the Erie Canal, opened in 1825, caused New York City's rise. Supporting evidence is everywhere -- freight costs fell by around 90 per cent, the city's population and port traffic rose steeply, and the canal towns grew into cities.

Now look for the trouble. New York was already the country's largest port before the canal opened, so something else had started the process. The canal's most dramatic effects were inland, on wheat prices and on where farmers could afford to settle, not on the harbour. And a rival explanation exists: the city's merchants had pioneered scheduled packet service to Liverpool in 1818, which mattered independently.

None of that destroys the claim; it narrows it. The revised version might be that the canal secured and extended a lead New York already held by making it the outlet for the whole interior, which is a smaller statement, better evidenced, and far harder to knock down. That is what progress looks like in this subject.

Notice where that counterevidence came from. Nobody handed it over; it came from reading the dates carefully and asking what was already true before the thing being credited. That is the habit worth taking out of this course. Ask what was happening immediately before the change you want to explain, because the answer is often that the change had already begun and your cause accelerated it rather than starting it.

Part 3 · Three questions this course can answer

Choose one. Each is genuinely open, each has material in the chapters behind you, and each has been answered differently by serious historians.

First: why did compromise hold in 1820 and in 1850 and collapse in 1854? You have the Missouri line, the five bills of 1850, the Fugitive Slave Act and Kansas-Nebraska. A strong answer will have to say something about what makes a thing divisible, and about the moment the argument reached into the free states.

Second: by 1860, had the cotton gin or the Erie Canal done more to decide where Americans lived and what they did? You have production figures, the domestic slave trade, freight costs and settlement patterns. This one rewards arithmetic, and a good answer will notice that the two are not independent.

Third: were the Reconstruction amendments a failure? You have the three texts, the registration figures, Williams v. Mississippi and the ninety years to 1965. The strongest answers to this one usually begin by separating two different questions that the word failure runs together.

Whichever you take, the first move is the same: write down what would have to be true for the opposite answer to be right. If you are going to argue that the amendments did not fail, state plainly what a genuine failure would have looked like and then show that it is not what happened. Doing that at the start, rather than at the end as a concession, is what separates an argument from a defence.

Part 4 · Drafting, breaking, revising

Draft the claim in one sentence before you write anything else, and date it. Then list the three strongest pieces of evidence for it, with a figure, a date or a quotation attached to each, not a general impression.

Then do the part that is uncomfortable. Spend as long hunting for evidence against your claim as you spent gathering evidence for it, and write down what you find even when it is inconvenient. If you find nothing, that usually means the claim is too vague to be contradicted, and you should go back to the first step.

Revise by narrowing rather than retreating. A revision is not an admission that you were wrong; it is the claim becoming more precise about when, where and how much. The clearest sign of a weak draft is a claim that stayed exactly the same from first sentence to last, because that means the evidence never did any work.

Finally, write the limit into the piece itself. One honest sentence saying what your explanation does not cover, or which evidence you could not resolve, does more for a reader's trust than another paragraph of support. You have seen this throughout the course: the sources that stated what they could not establish were the ones worth believing about everything else.