The Great Crash refers to the dramatic decline of the stock market that occurred in the United States in late October 1929. It began with a series of steep drops in stock prices, culminating in a massive sell-off on October 29, known as Black Tuesday. This event marked the beginning of the Great Depression, a severe worldwide economic downturn. The crash was fueled by speculative investments and overproduction, leading to an unsustainable economic bubble. Many investors lost their savings, and banks failed as people rushed to withdraw their money. The Great Crash had lasting effects on the global economy and led to significant changes in financial regulations.