• Speculation — Americans in the 1920s bought shares hoping to sell them for profit, often "on the margin" (borrowed money).
• The Crash — In October 1929, panic selling collapsed share prices, wiping out fortunes almost overnight.
• Economic impact — Businesses closed, banks collapsed, industrial and car production plunged, farmers lost land.
• Social impact — Mass unemployment, homelessness, Hoovervilles, the Dust Bowl migration, and worsened discrimination against Black Americans and immigrants.
• Political impact — Hoover's "do-nothing" laissez-faire response (and his violent treatment of the Bonus Marchers) made him deeply unpopular, letting Franklin D. Roosevelt win the 1932 election in a landslide.

📈 What is "speculation"?

Think of speculation like buying a football sticker album when the stickers are cheap, purely because you're betting that in a year they'll be worth loads more — not because you actually care about the stickers. That's exactly what people were doing with shares in the 1920s. Speculation means buying something (in this case, a share in a company) purely because you expect its value to rise, so you can sell it later for a profit.

Throughout the 1920s, the US economy boomed and share prices kept climbing. This created a dangerous psychology: everyone assumed prices would keep rising forever, so more and more ordinary working-class people — not just rich bankers — piled into the stock market hoping to get rich quick.

⚠️ Buying "on the margin" — the real danger

Here's the part that actually caused the disaster. Many people didn't even have enough cash to buy shares outright. Instead, they bought "on the margin": they paid only about 10% of a share's price themselves and borrowed the rest from a bank or broker, gambling that the share's value would rise high enough to pay back the loan and still leave a profit.

This is exactly like buying a £1,000 phone by paying £100 deposit and borrowing £900 — except you're betting the phone will magically become worth £1,500 before the repayment is due. If its value falls instead, you're stuck owing money for something now worth less than your debt. Multiply that by millions of Americans, and you can see how fragile the whole system was.

🧩 Why the US economy started to slow down in 1929

A crash needs a trigger. By 1929, cracks were already forming underneath the boom:

Once investors started noticing these warning signs, confidence cracked. People began selling shares instead of buying them — and that's when panic set in.

💥 The crash itself — "Black Thursday"

The crash itself was just the spark. What made it a disaster was the chain reaction it set off across every part of the economy — this is the classic "domino effect" you should be ready to explain in exam answers.

🏭 Impact on businesses

• Share prices kept falling for three years after the crash — this wasn't a one-day event.
• Industrial production fell by 45% by 1932.
• Car production fell by 80% by 1932.
• Over 100,000 businesses went bankrupt between 1929 and 1932.

🏦 Impact on banking — the chain reaction

This is the most important cause-and-effect chain in the whole chapter, so let's walk through it step by step:

🌾 Impact on agriculture

Here's a detail that trips a lot of students up: farmers hadn't even benefited much from the 1920s economic boom, yet they were hit hard by the crash anyway. Why? Food prices fell after the crash, while interest rates on farm loans increased between 1929 and 1932 — a brutal combination. Farmers who'd borrowed money to buy machinery now faced more expensive repayments with less income to pay them. Around 750,000 farmers lost their land during the Great Depression as banks repossessed their farms.

👷 Impact on workers

All these business and bank collapses meant one thing for ordinary people: job losses. By 1933, a quarter of all Americans (14 million people) were unemployed. And crucially, there was no welfare system in 1920s America — if you lost your job, there was no government safety net to catch you.

🏙️ Life in towns and cities

Unemployment rocketed from 3% in 1929 to 25% in 1933. With no government welfare system, the Republican government under Hoover expected unemployed people to sort out their own problems — charities and local governments had to step in, but demand was so overwhelming that some state governments went bankrupt themselves, meaning even government employees like teachers went unpaid.

Even people who kept their jobs suffered, because employers could cut wages and increase working hours — if a worker refused, there was always someone desperate enough to replace them. Malnutrition became common. By 1932, over 250,000 Americans couldn't repay their mortgages, leading to mass evictions and repossessions.

🌪️ Life in the countryside — the Dust Bowl

Farmers were hit by a "double blow": the economic collapse (rising interest rates, falling food prices, 750,000 farms repossessed) combined with an environmental disaster. Overcultivation had stripped the natural grass cover from the soil in the Midwest and Great Plains, and in 1930 drought plus strong winds blew away millions of acres of topsoil — this became known as the Dust Bowl.

The result was mass migration: thousands of farm workers headed to California hoping to find work on citrus farms. But life there was tough too — migrants were often crammed into unhygienic camps where disease spread quickly, and existing Californian workers resented them, believing migrants were "stealing" scarce jobs.

⚖️ Impact on immigrants & Black Americans

This is a crucial point for showing exam depth: the Depression didn't hit everyone equally — existing inequalities got worse. In the South, many Black Americans worked as sharecroppers (farming a landowner's land in exchange for handing over part of their crop as rent). When food prices collapsed after the crash, landowners made huge numbers of sharecroppers redundant.

This triggered a mass migration of Black Americans northward to cities like Chicago and New York in search of work — but jobs were scarce there too, and they faced racial discrimination on top of the general hardship. Similarly, immigrant workers were accused of "driving down wages" and faced growing resentment; in California, some immigrants were even deported and sent back to Mexico.

🚫 Hoover's belief system — "rugged individualism"

To understand why Hoover became so unpopular, you first need to understand his core belief, sometimes called "laissez-faire" (French for "let it be"). Hoover genuinely believed that:

• The government should stay out of people's lives — if it helps people too much, they become "lazy and immoral."
• People should rely on "rugged individualism" — solving their own problems without government help.
• "Prosperity is just around the corner" — the Depression would sort itself out naturally.

This philosophy had worked fine in the booming 1920s, when people didn't need help. But once disaster struck, it meant Hoover was painfully slow to act — and when he finally did act, it looked too little, too late.

🐌 Hoover's belated response

Between 1930 and 1932, Hoover did eventually introduce some measures:

The problem? These measures came far too late to undo the damage of his early inaction, and many Americans saw Hoover as out of touch and uncaring about their suffering.

🪖 The Bonus Marchers — the final straw

This single event tells you everything about why Hoover lost so badly. The Bonus Marchers were 25,000 First World War veterans who wanted their promised war pension ("bonus") paid immediately in 1932, rather than waiting until 1945 as originally planned. When Hoover refused, they marched to Washington DC and built a Hooverville right outside the White House.

Hoover's response was to send in the Army with tear gas and tanks to forcibly remove them — killing two protestors and a baby, and injuring over 1,000 people. For a country that valued respecting war veterans, this was a devastating political mistake. It confirmed, in the public's mind, that Hoover simply didn't care about ordinary Americans.

🎤 Why Roosevelt's campaign worked

Roosevelt didn't just benefit from Hoover's unpopularity — he ran a genuinely effective campaign:

• He was an excellent public speaker and travelled 20,000 km by train across the country making speeches, so people felt he actually cared about them.
• He promised to help the "forgotten man" — millions of struggling Americans felt personally seen by this phrase.
• He shared his own struggles — Roosevelt had been disabled by polio at age 39, which made him seem relatable, unlike Hoover's unrelatable "self-made millionaire" backstory.
• He promised a "New Deal" — concrete government schemes for jobs, help for the poor and unemployed, better worker protections, and an end to Prohibition.

🔢 Key numbers worth memorising