Would Europe still have won World War 2 if America hadn't gotten involved?

hard question to answer.

soviet Russia contributed the most to the defeat of Germany and some people claim they could have have defeated German basically singlehandely, given their huge armed forces and forbidable fighting power. could they? possibly

It's worth remembering that the biggest contribution of the US was resources. they supplied the Soviet Union with weapons, clothing, vehicles and food but there is debate as to how important this policy was.