What name is given to the October 1929 U.S. stock-market collapse that included Black Tuesday?

The October 1929 U.S. stock-market collapse is known as the Wall Street Crash of 1929.

The crash followed years of rising share prices, heavy speculation, and widespread buying on margin. On October 24, 1929, often called Black Thursday, panic selling overwhelmed the New York Stock Exchange. A temporary recovery attempt did not restore confidence, and selling intensified on October 28 and October 29.

October 29 became known as Black Tuesday. The crash did not by itself create every condition of the Great Depression, but it sharply damaged wealth and confidence. Bank failures, falling demand, debt burdens, protectionist policies, and monetary problems also contributed to the prolonged economic collapse that followed.

The 1929 crash is often confused with the entire Great Depression. They were related but different events: the crash was a market collapse, while the Great Depression was a worldwide economic downturn lasting through much of the 1930s.