The threat embodied by the Soviet Union under Joseph Stalin dampened any comeback of isolationism.
The ideological goals of the fascist powers in Europe during World War II and the growing aggression of Germany led many Americans to fear for the security of their nation, and thus call for an end to the US policy of isolationism.
About 16 times greater
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Probably not because without slavery ending we would still be at war 4 it and all of the usa would fall apart
