Answer:
The Soviet Union was our new enemy.
Explanation:
They didn't want the national government to be so strong it would turn into a monarchy (or something like it) and they didn't want the state to be powerless against the national government.
The dust bowl is a cause
The drought in the midwest is a cause
Creating social security helped end great depression
Over production was a cause
Im gonna say winning the first world war did since it generally did
And demand fell after the war is a cause
