How did world war 1 contribute to the great migration

Arguably the most profound effect of World War I on African Americans was the acceleration of the multi-decade mass movement of black, southern rural farm laborers northward and westward to cities in search of higher wages in industrial jobs and better social and political opportunities.

lying without the limits of the several states; and may permit them, at such times, and in such manner as it

yes.

explanation:

because it let the japanese know who had the upper hand in the war.