I think it's D. or C
Hope this Helps
Both Copernicus and Galileo supported the theory of a heliocentric solar system. That means they thought the sun was the center of the solar sytem and all planets revolved around it, while everyone else beleived the Earth was the center of the solar system (geocentric solar system). Both were punished for their views.
The answer is Literacy increased among ordinary people.
I searched that just to make sure that I was right.
Hitler's power was not checked when the US entered the war. The war with the US was between them and Japan. The USSR did join sides with the allies when Germany broke an treaty. However, the US did win the war between Japan.