Why were most americans more prosperous than europeans during the 1920s

The correct answer for the question that is being presented above is this one: "Europe was recovering from the destruction of World War I." Most Americans more prosperous than Europeans during the 1920s because Europe was recovering from the destruction of World War I.

B, conquered norway. D, Invaded the Netherlands. E, Pushed allied forces out of france because germany did all these events on 1940