"Black Tuesday," which occurred on October 29, 1929, is the day that marked the beginning of the Great Depression. The stock market crash on this day resulted from a combination of speculative investing, overproduction, and a lack of market regulation, leading to panic selling. The Dow Jones Industrial Average plummeted, erasing billions of dollars in value and devastating investors. The crash contributed to widespread economic hardship in the U.S. and around the world, leading to high unemployment rates, bank failures, and a prolonged economic downturn, which reshaped economic policies and government interventions throughout the 1930s.