In one paragraph explain clearly, what was the stock market crash of 1929?

The stock market crash was one of the causes that led to the Great Depression. In simpler words, it accelerated the global economic collapse. It began on October 24, 1929, and lasted for 4 days afterwards. Stock market prices dropped in significant rates, which lead many to lose hope and beliefs that America was in fact a wealthy nation and would help the poor become wealthy. A downturn in business cycles was taking place, and the economic crash was doing no good to anyone.

1) she is extremely upset