what caused the U.S stock market to crash in 1929

The U.S. stock market crash of 1929, also known as Black Tuesday, was primarily caused by a combination of factors, including:

1. Overvalued stocks: The stock market experienced a period of rapid expansion in the 1920s, leading to overvaluation of stocks. Many investors purchased stocks on margin (using borrowed money) which further inflated stock prices.

2. Speculation: Speculative buying and selling of stocks became rampant during the 1920s, with many investors making high-risk investments based on rumors and speculation rather than underlying fundamentals.

3. Economic slowdown: The U.S. economy began to weaken in the late 1920s, with industrial production declining and unemployment rising. This economic slowdown caused investors to become increasingly concerned about the future profitability of companies, leading to a sell-off of stocks.

4. Stock market manipulation: There were allegations of stock market manipulation by wealthy investors and financial institutions, who used their influence to artificially inflate stock prices.

5. Lack of regulation: The stock market in the 1920s was largely unregulated, allowing for risky trading practices and insufficient oversight of financial institutions.

These factors, combined with a panic among investors and a lack of confidence in the market, led to the massive sell-off of stocks on October 29, 1929, causing the stock market to crash and triggering the onset of the Great Depression.