Answer:
The attack on the Pearl Harbor Naval Base by Japan.
Explanation:
After Japan launched their offence on Pearl Harbor, the United States became involved in the war. Before this, we were neutral and didn't want to be involved in the conflict. It was an act of pride by the young men who had enlisted.
<span>benefit from the economic prosperity of the American colonies</span>
The Dust Bowl.
The farmers had overfarmed their land and had lost the valuable top soil. Take into consideration a drought as well, the high winds of the plains took the overfarmed (and dry) soil and blew it across the land.