How did the stock market crash help to define the era of 1930-1945? It drove prices down as companies attempted to drive demand for their products up, leading to a decade-long depression.

It resulted in bank closures and the loss of people’s savings accounts, marking the beginning of the Great Depression.

It resulted in tariffs being decreased to encourage more international trade, which ultimately led to the Second World War.

It led to investors in other countries buying up American companies, leading to a war involving the major power of the world.