The Economic Boom

HistoryAQAGCSEUnit: America 1920-1973
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The basics

Setting the Scene

📖 Setting the Scene

The 1920s boom wasn't magic — it was a perfect storm of factors that all hit at once. Imagine a rocket with multiple engines: World War One had made America rich while Europe burned. Henry Ford had figured out how to make cars so cheap that ordinary families could buy them. Republican presidents kept taxes low and let businesses do whatever they wanted. And Americans discovered they could buy now and pay later. When all these engines fired together, America's economy launched into the stratosphere. But rockets that go up fast can also come down hard...

The Roaring 20s - Crash Course US History (14 mins)

What was the assembly line?: Moving belt carried parts past stationary workers, each doing one task — Henry Ford's system that made mass production possible
Key terms

History glossary

What was the assembly line?
Moving belt carried parts past stationary workers, each doing one task — Henry Ford's system that made mass production possible
Spotlight
Deep Understanding: The Chain of Causes

Don't just list causes — show how they CONNECT. This is what gets top marks:

Exam tip

Earn the mark scheme marks

🧠 Memory Aids: Lock In the Key Facts

The WCRAM mnemonic (already in your deepdive — this is your main cause-recall tool):

  • W — World War One gave America industrial capacity
  • C — Credit (hire purchase) let people buy on borrowed money
  • R — Republican policies: low taxes, high tariffs, no regulation
  • A — Advertising created demand and a consumer culture
  • M — Mass production made goods cheap enough to buy

The "60-80 rule" for credit statistics: Remember that 60% of cars and 80% of radios were bought on credit by 1929. Both numbers are higher than you'd expect — which is exactly why examiners love them. If you can remember 60 and 80, you'll always have a strong statistic ready.

The Model T price journey: 850 → 290 — Think of it as nearly cutting the price by two-thirds. In 1908, only the wealthy could afford a car at $850. By 1925, a Ford worker earning $5 a day could save up for a Model T at $290. That's the story of mass production in two numbers.

The Dow Jones: 63 → 381 — The stock market grew sixfold in eight years (1921–1929). An easy way to remember this is "six times bigger, all built on speculation." When confidence cracked in October 1929, those same investors tried to sell all at once — and the whole thing collapsed.

Key dates to know cold:

  • 1908 — Ford launches the Model T (first mass-market car)
  • 1913 — Ford introduces the moving assembly line at Highland Park
  • 1921 — Republican boom begins (Harding presidency, Mellon as Treasury)
  • 1922 — Fordney-McCumber Tariff (high tariff protectionism)
  • 1925 — Model T costs $290 (from $850 in 1908)
  • 1929 — 27 million cars on US roads; Dow Jones peaks at 381; Wall Street Crash

Visual association — "The Factory and the Credit Card": Picture a huge gleaming factory (mass production) connected by a long chain to a credit card (hire purchase). The factory makes goods cheaply; the credit card lets ordinary people buy them. That chain of connection is the heart of the boom. When the credit card maxed out in 1929, the whole chain snapped.

Now try it yourself

Quiz · Question 1 of 12

By how much did Henry Ford's assembly line reduce the time to build a Model T car?

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