PLZ HELP What ultimately caused the Great Depression to end?

Question 4 options:

Roosevelt's policies ended unemployment

The U. S. began preparing to enter World War II

The stock market surged as soon as Roosevelt was elected

The U. S. government took over all American banks

my cultural heritage consists of irish, german, native american, and others.

straight down to hell mate

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.