Which of the following is one of the reasons that the native american population decreases significantly in north and south america after the arrival of the europeans a. native americans tribes fought against each other in wars. b. there was widespread famine, and many native americans starved. c. the europeans brought diseases like smallpox, and many native americans died. d. many native americans moved to europe.

C.

A and B are wrong because those had nothing to do with the Europeans

D is wrong because very few, if any, Native Americans moved to Europe

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.