Which two regions did the great migration heavily affect? a) the west and the east b) the south and the north c) the west and the north d) the east and the south

(d) rivers.

explanation:

civilizations developed around rivers because their waters provided places to hunt and fish. also, as the rivers flooded, the lands around them became fertile. this allowed them to support farming. this is especially true of the nile river, which flooded the same time each year.

c, because the american revolution was from 1765 to 1783.