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Because of US Policy to fight communism.
Containment .
Part of the Cold War; communist containment.
The US had a non intervention policy before December 1941 and saw the war as a 'European War' and nothing to do with America.
they realised they could get more(of everything) if they are involved
How did the US go a isolationism foreign policy to a political and military involvement?
Because of US Policy to fight communism.
Containment .
Domino Effect, which basically amounts to a policy of containment.
Part of the Cold War; communist containment.
The US had a non intervention policy before December 1941 and saw the war as a 'European War' and nothing to do with America.
they realised they could get more(of everything) if they are involved
No. After World War I, US foreign policy was focused on isolationism. The US public was deeply disinterested in international politics or involvement. It would be only after World War II that the United States took a more expansionist tone.
That policy is called the 'containment policy'. It led to the US involvement in the Korean and Vietnam wars, among others.
movement toward less international trade
It finally brought black Americans into the military.
the united nations