What was the great migration during world war 1

 It is conservatively estimated that 400,000 African Americans left the South in 1916 through 1918 to take advantage of a labor shortage in the wake of the First World War. In 1910, the African-American population of Detroit was 6,000.

In the late fifteenth century, a major world power that established colonies in the era of old imperialism was france or germany or spain. their colonial activity was mainly limited to america or africa or asia.