American Foreign Policy Questions

1} What was the intended purpse of the Monroe Doctrine?
The Monroe Doctrine was intended to diminish European interference.
2} How did the United States respond to the end of WWI?
The U.S. returned to a policy of isolationism.
3} What was the incident that drove the United States into WWII?
Japan's attack on Pearl Harbor, Hawaii in 1941.
4} What developments led to the end of the Cold War?
The great costs of these conflicts- both in money and in lives- led to renewed calls for isolationism.