They did not want the united states to join the league of nations
After the war, the United States had a booming economy. Unemployment was low, and Americans secured loans to purchase new consumer goods such as cars and radios. In Europe, however, the war had taken its toll.
A. Moved away from import substitution
If you watch the live lessons if you go to connections they help a lot in the future as well!
Answer:
I think your answer is D - The doctrine of nullification
Explanation:
I believe it is so because of a nullification crisis in the past with South Carolina, in which they almost left the union.