What have been the principal causes of mass migration since WWII? What are some of the challenges presented by these migrations to host countries?

Which german count invented the zeppelin

What problems did socialist thinkers seek to solve

What was a cause of the boer war? a. conflicts between boers and bantu c. disputes over land ownership b. conflicts over water rights d. desire to control the region's mineral wealth select the best answer from the choices provided a b c d