Which market crash began with the October 19, 1987 fall called Black Monday?

The market crash that began with the October 19, 1987 fall called Black Monday was the 1987 stock market crash.

The crash was a worldwide equity-market event. Although the New York Stock Exchange received the most attention, major markets in Europe, Asia and the Pacific also suffered severe losses within the same period.

The Dow Jones Industrial Average’s 22.6% one-day fall was the most dramatic American statistic, but the event was not caused by one single piece of news. Investors were already concerned about valuations, interest rates, trade imbalances and disagreements over currency policy.

After the crash, regulators introduced or strengthened mechanisms intended to slow panic selling. The United States developed circuit breakers that can temporarily halt trading after unusually large market declines. These controls are designed to provide time for information to spread and orders to stabilize, not to guarantee that prices will recover.