What conflicts led to the American involvement in World War 2?

Answer:
Mainly the attack on Pearl Harbor. Also, the military provided many jobs for the unemployed Americans who lost their jobs during the Great Depression. However, the US never wanted to get involved, but Germany declared war after the attack on Pearl Harbor.
First answer by Myeverything0426. Last edit by Myeverything0426. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].