Wall Street crash of 1929

The Wall Street crash of 1929, also known as the Great Crash, was a major stock market crash in the United States which began in October 1929 with a sharp decline in prices on the New York Stock Exchange (NYSE). It triggered a rapid erosion of confidence in the U.S. banking system and marked what would later cascade into the worldwide Great Depression that lasted until the United States entered into World War II on December 8, 1941, making it the most devastating crash in the country's history.

Source: Wikipedia — Wall Street crash of 1929 (CC BY-SA 4.0)