The U.S. Bureau of Refugees, Freedman's and Abandoned Lands, popularly known as the Freedmen's Bureau, was established in 1865 by Congress to help former black slaves and poor whites in the South in the aftermath of the U.S. Civil War ,1861-65.
The powers of Congress are affected by all of these options except the "state constitutions", since the Constitution gives Congress final authority over the states in terms of legislation.
Answer:
Wartime military growth had reduced unemployment.