Final answer:
In October 1929, the stock market crashed, leading to the Great Depression.
Step-by-step explanation:
In October 1929, the stock market crashed, leading to one of the most severe economic downturns in history known as the Great Depression. The crash was triggered by a series of factors including over speculation and excessive use of margin buying, which resulted in a rapid decline in stock prices. This event had a profound impact on the global economy and lasted for about a decade.
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