The theories of continental drift and sea-floor spreading combined to make the theory of a. pangaea b. plate tectonics c. supercontinents d. rejoined continents

The world wars of the twentieth century immediately led to a. the establishment of a communist bloc in eastern europe b. the urbanization of europe’s societies c. an emphasis on humanism d. an emphasis on ties to greek and roman societies select the best answer from the choices provided. a b c d