Whats it called when Massive european conflicts which the US entered after trying to stay out?

Isolationism is a category of foreign policies institutionalized by leaders who assert that nations' best interests are best served by keeping the affairs of other countries at a distance

Extra: Provocation from the Japanese

Larger historical forces eventually brought the United States to the brink of World War II, but the direct and immediate cause that led it to officially entering the war was the Japanese attack on Pearl Harbor.

the folsom i believe

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