There were many pros to the U.S entry into WWII, but the most important was the economical boom our country had benefited from the war. We came out of the war as the richest country hardly affected at home. But the second major pro was that we came out as the strongest nation with nuclear capability. We now had major influence world wide, mainly in europe. But cons to the war was the loss of life both in our military and our allies. I shouldn't consider this a con but the U.S sent billions to to foreign aid to rebuild europe.
