The event that triggered the onset of the great depression of the 1930s is the stock market crash.
The great depression of the 1930s started in 1929 and ended in 1939. It is one of the worst depressions in the history of the US economy. A depression is when there is a severe decline in the economic activity of a country. The great depression was triggered by the crash of the stock market.
To learn more about the great depression, please check: https://brainly.com/question/2609673
