Many european empires arose in the wake of
a. the collapse of the byzantine empire
b. mongol invasions throughout the region
c. hun invasions that triggered a mass migration
d. the expansion of african kingdoms like the ghana

"a shortage of traditional labor created new opportunities in the workplace. a major cause of the internment of japanese americans during world war ii was. racial prejudice. in the early 1940's, the "destroyers-for-military-bases deal" with great britain and the lend-lease act were evidence that the united states."