<span>The majority of Americans sympathize with the Allies because of the strong ties and there was investment for the Allied victory. ... The event that triggered the United States entry into World War 2 was because the Japanese had attacked Pearl Harbor because they wanted to gain an empire in Asia. 3.</span><span>Jan 4, 2016</span>
Exploration is the reason why. It started to happen in the mid-1500s.
They were dealing with the after effects of the Cold War
The rush bagot try answer is in the google for the answer