In the 1920s, America seemed unstoppable. Factories hummed, stock prices climbed, and ordinary people believed they could get rich overnight. Then, in 1929, it all came crashing down.
The Great Depression was not caused by one single event. It grew out of several weaknesses building up through the decade, which finally collided in 1929. Thinking about cause and consequence here means asking which factors were long-term structural problems, and which were the final trigger.
Four strands of causation: Historians group the causes into political failures, economic weaknesses, agricultural/environmental problems, and the psychological shock of the Wall Street Crash itself. Paper 3 essays often ask you to weigh which mattered most.
- Failures of regulation — the government followed a laissez-faire approach, so banks and the stock market operated with almost no oversight.
- Weak banking system — thousands of small, poorly capitalised banks existed with no deposit insurance, so a single bank failure could spark a chain reaction.
- Trade problems — high US tariffs, like the 1922 Fordney-McCumber Act, invited retaliation abroad and shrank the markets for American goods.
- Agricultural depression — farmers had already been struggling with low prices for years before 1929, so rural America entered the crisis early and hard.
- Environmental strain — poor farming practices on the Great Plains stripped away topsoil, setting up the ecological disaster that became the Dust Bowl.
Regulation had simply not kept pace with the economy. There was no central body policing the stock market, so people could buy shares on margin — paying only a small deposit and borrowing the rest — which let prices inflate on borrowed money rather than real value.
The regulatory gap: Republican presidents Harding, Coolidge, and Hoover all favoured minimal government intervention. This meant no rules stopped reckless speculation, no insurance protected small depositors, and no safety net existed once the crash hit. This is central to any 'failures of regulation' argument.
The banking system itself was fragile by design. Unlike a few large national banks, the US had around 25,000 small, local banks by the late 1920s, each with limited reserves and no protection if depositors panicked and demanded their money at once.
Trade policy made things worse rather than better. The Fordney-McCumber Tariff of 1922 raised import duties to protect American industry, but other countries responded with their own tariffs, which choked off the international trade that could have cushioned the downturn.
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While Wall Street boomed, American farmers were already in trouble. This is a key point for an essay: the Depression did not begin equally for everyone in 1929 — for farmers, hard times had started nearly a decade earlier.
During the First World War, US farmers had expanded production massively to feed Europe. When European farming recovered after 1918, demand collapsed, but American farmers kept producing at wartime levels, and prices for crops like wheat and cotton fell steadily through the 1920s.
| Factor | What happened | Effect |
|---|---|---|
| Overproduction | Farmers kept output high after WWI demand fell | Crop prices collapsed through the 1920s |
| Debt | Farmers had borrowed to buy land and machinery | Falling income made loans impossible to repay |
| Soil abuse | Prairie grassland was over-ploughed for wheat | Topsoil loosened, priming it to blow away |
| Drought (early 1930s) | Severe dry spells hit the Plains | Bare soil turned to dust — the Dust Bowl |
The Dust Bowl: By the early 1930s, drought combined with damaged soil to produce huge dust storms across Oklahoma, Texas, Kansas, and neighbouring states. Hundreds of thousands of farming families, later nicknamed 'Okies', were driven off their land — an environmental disaster layered on top of an economic one.
Then came October 1929. Stock prices had risen far beyond what companies were actually worth, fuelled by speculation and buying on margin. When confidence cracked, the sell-off became a stampede.
24 October 1929 — 'Black Thursday'
A record 13 million shares were sold in panic as prices began to slide sharply.
29 October 1929 — 'Black Tuesday'
About 16 million shares were dumped; the market lost billions of dollars in value in a single day.
Reactions spread
Banks that had lent money for margin buying called in loans; businesses cut jobs and investment; consumer spending froze.
Confidence, then collapse, then contraction — the Crash didn't cause the Depression alone, but it triggered the panic that turned weaknesses into catastrophe.
It matters for your essay that the Crash was a trigger, not the whole story. Even without it, the weak banks, farm crisis, and trade problems made a downturn likely — but the Crash turned a slowdown into the worst depression in US history, because it destroyed confidence and froze credit overnight.
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The Depression did not just wreck the economy — it transformed American politics. This section covers the political impact: what changed in parties, in government power, in workers' rights, and who resisted the change.
Significance: a political earthquake: Before 1929, Republicans dominated national politics and the federal government stayed small. By 1936, Democrats controlled the presidency and Congress by huge margins, and government had permanently grown. This is the kind of long-term significance a Paper 3 essay should weigh.
President Herbert Hoover, a Republican, believed strongly in rugged individualism — the idea that Americans should solve problems through self-reliance and voluntary cooperation, not government handouts. His caution looked like weakness once the crisis deepened.
Hoover's approach
- Encouraged voluntary business cooperation rather than mandating action
- Signed the Smoot-Hawley Tariff (1930), which worsened global trade collapse
- Set up the Reconstruction Finance Corporation (1932) to loan money to banks and businesses
- Refused large-scale direct relief to individuals, fearing dependency
Impact on party politics
- Hoover became the public face of the Depression's suffering — 'Hoovervilles' (shantytowns) mocked his name
- Republicans lost the 1932 election in a landslide to Franklin D. Roosevelt
- A new Democratic coalition formed — urban workers, immigrants, African Americans, and the South — that dominated politics for a generation
- 1932–36 marked a lasting realignment of which party voters trusted with the economy
Roosevelt's New Deal, launched from 1933, expanded what government was willing to do. His famous 'first hundred days' passed a wave of emergency legislation, and the change in the federal government's role was dramatic and lasting.
- Expansion of executive power — Roosevelt used radio 'fireside chats' to speak directly to the public and pushed Congress to grant him sweeping emergency authority.
- Growth of federal government — new agencies like the WPA and the TVA put Washington directly into citizens' daily lives.
- Banking reform — the Emergency Banking Act (1933) and Glass-Steagall Act (1933) restored trust by inspecting banks and creating the FDIC.
- Labour rights — the Wagner Act (1935) guaranteed workers the right to unionise and bargain collectively, transforming the power of organised labour.
- Social policy — the Social Security Act (1935) created old-age pensions and unemployment insurance, the first national safety net of its kind in US history.
Not everyone welcomed this. Opposition to the New Deal came from several directions, and a strong essay should be able to explain each one rather than treating 'opposition' as one single block.
Who opposed the New Deal, and why: Conservative businessmen and the Liberty League argued Roosevelt was destroying free enterprise and building a dictatorship. The Supreme Court struck down key laws (like the NRA in 1935) as unconstitutional overreach. Meanwhile, populist critics like Huey Long said the New Deal did not go far enough to redistribute wealth.
| Critic | Core argument |
|---|---|
| Liberty League / conservatives | Too much government power; threatens capitalism and individual liberty |
| Supreme Court (1935–36) | Several New Deal laws (e.g. NRA) were ruled unconstitutional overreach |
| Huey Long ('Share Our Wealth') | New Deal too timid; wanted direct wealth redistribution to the poor |
| Father Coughlin | Attacked bankers and later turned against Roosevelt as insufficiently radical |
Use this for 'To what extent' essays: A claim like 'the New Deal transformed the US government' invites you to argue FOR (permanent agencies like the FDIC and Social Security, a changed Democratic voter base) and AGAINST or WITH LIMITS (Supreme Court resistance, the economy still hadn't fully recovered by 1939, the New Deal didn't fully help everyone). Always reach a judgement rather than just listing both sides.