Ocean-ocean convergence
a) parallel belts of uplifted and volcanic mountains
b)parallel belts of folded mountains
c)mainly continental volcanic arcs
d)mainly volcanic mountains

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