Why did President Roosevelt establish a War Production Board?
to organize the branches of the military as they developed the best strategies of attack
to make the supplies necessary for war
to coordinate the production of war goods among corporations
to be certain that the government received the best deal from overseas producers
The main reason why President Roosevelt established a War Production Board was "to coordinate the production of war goods among corporations," since there needed to be a coordinated effort to ensure that supply matched demand.
