How did america’s involvement in world war ii trigger a mass migration

People moved from one place to seek work in other places.

Explanation:

During World War II, America saw many migrations within states as it encourages people to work in industries to produce war goods. Work was generally in areas with factories already built, and in larger cities. All this led to people moving to the cities to help with the war effort. Mass migration was an event that began during war when soldiers and their families assigned to new duty stations or as war workers in shipyards and aircraft factories.                            

in november 1781, john hanson became the first president of the united states in congress assembled, under the articles of confederation. many people have argued that john hanson, and not george washington, was the first president of the united states, but this is not quite true.

explanation: