How did the theory of Social Darwinism lead to ethnocentric or racist beliefs throughout the nations of Europe?

How does the u.s. constitutional republic compare to authoritarian forms of government

List two inventions that were invented in the united states before the american civil war

What development led the soviet union to establish the warsaw pact? the soviets gained control over satellite countries. west germany joined nato. the allied powers grew weaker. the berlin wall was erected between east and west germ