Answer:
the Jim Crow laws enforced racial segregation in the southern united states.
Civil wars broke out
Tensions between the super powers caused tensions in other countries who relied on the super powers, for trade, and support, also for countries politically dies to these countries.
:) hope it helped
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.