What event names the dramatic U.S. share-price collapse that began on October 24, 1929?

The dramatic U.S. share-price collapse that began on October 24, 1929, is called the Wall Street Crash of 1929.

Selling surged on Black Thursday, October 24, when investors dumped millions of shares on the New York Stock Exchange. Bankers temporarily steadied prices, but confidence soon failed again. Black Monday on October 28 and Black Tuesday on October 29 brought further enormous declines, with record trading volumes for the era.

The crash did not by itself cause every feature of the Great Depression, but it severely damaged wealth, credit and business confidence. Banks that had lent for stock purchases suffered losses, while falling demand worsened the economic contraction. It is distinct from the 1987 crash, whose largest one-day percentage decline occurred much later, and from the 2000 dot-com collapse, which centered on technology shares.