The end of prosperity: the Wall Street Crash, 1929
The Seeds of Collapse: Overproduction and Underconsumption
Even as the 1920s boom appeared to be at its height, deep structural weaknesses were developing beneath the surface. The most fundamental was the gap between what American factories could produce and what consumers could afford to buy. Overproduction had been building throughout the decade. Factories, driven by mass production techniques, could turn out goods at a rate that outstripped real demand. Once hire purchase credit was exhausted and storage warehouses filled up, factories began cutting production — and with cuts in production came lay-offs and falling wages.
This problem was made worse by the unequal distribution of wealth. The top 5 per cent of Americans received roughly one-third of all personal income in 1929, while tens of millions of farmers, unskilled workers and Black Americans had little disposable income. When factories produced consumer goods in vast quantities, there was a finite number of people who could afford to buy them, even on credit. Falling agricultural incomes meant that the rural half of the population was a weak consumer base throughout the decade.
By the late 1920s, American manufacturers were producing more goods than consumers could buy. Unsold goods piled up in warehouses. Companies began cutting output and laying off workers, reducing consumer purchasing power further — a downward spiral that made the economy increasingly fragile before the Wall Street Crash of October 1929.
Speculation and the Stock Market Bubble
While the productive economy was showing signs of strain, the stock market was booming. Throughout the 1920s, rising share prices attracted millions of ordinary Americans into the stock market for the first time. Between 1920 and 1929, share prices on the New York Stock Exchange roughly tripled. The belief that share prices would always rise encouraged reckless speculation.
The most dangerous practice was buying on the margin. Investors typically paid only 10 per cent of a share’s price upfront, borrowing the rest from their stockbroker. This worked brilliantly when prices rose — investors could sell at a profit and repay the loan. But if prices fell, the broker could demand immediate repayment of the loan (a “margin call”), forcing investors to sell shares at a loss. The entire system depended on prices continuing to rise.
The Wall Street Crash was not the first speculative collapse of the decade. Between 1924 and 1926, a land speculation boom in Florida drew hundreds of thousands of investors. Property prices in Miami doubled, then doubled again, as speculators bought and resold plots of land at rising prices without any intention of building on them. The boom collapsed in 1926, partly because of a devastating hurricane that killed approximately 400 people. Millions of investors lost their money. The Florida collapse was a warning of what happened when asset prices lost touch with underlying value — a warning that went unheeded on Wall Street.
Black Thursday fell on 24 October 1929. Around 12.9 million shares were sold in a single day as investors panicked. On “Black Tuesday” five days later, on 29 October 1929, over 16 million shares were traded, and the market collapsed catastrophically. Billions of dollars of paper wealth were wiped out within days.
The Crash: Panic Selling and Market Collapse
By September 1929, share prices had begun to slide. Nervous investors started selling. As prices fell, margin calls went out to investors who had borrowed to buy shares; to pay their debts, they sold more shares, pushing prices down further. The Wall Street Crash was self-reinforcing — falling prices caused selling which caused further price falls.
On 24 October 1929 — Black Thursday — approximately 12.9 million shares changed hands as panic spread. Leading bankers temporarily steadied prices by purchasing shares, but the recovery was brief. On 29 October — Black Tuesday — more than 16 million shares were traded in a single day, and prices collapsed. By mid-November 1929, share prices had fallen by approximately 40 per cent from their September peak. The Dow Jones Industrial Average, which had reached 381 points in September 1929, eventually bottomed out at 41 points in July 1932 — a fall of nearly 90 per cent from its peak.
The Crash did not cause the Great Depression on its own — it triggered a crisis whose roots lay in overproduction, agricultural decline, unequal wealth distribution and weak banking regulation. As share prices collapsed, banks that had lent money for stock speculation faced ruin; many called in loans to businesses, which then cut production and laid off workers. Consumer spending collapsed as millions became unemployed. By 1933, approximately 13 million Americans — around 25 per cent of the workforce — were unemployed, and thousands of banks had failed.
The international consequences were equally severe. American banks recalled loans to European countries, pushing Germany and other fragile economies into depression. World trade collapsed as countries raised tariffs against each other. The “Roaring Twenties” ended not with a gradual fading but with a catastrophic collapse that transformed the economic and political landscape of the Western world for the next decade.