Bureau of Refugees are called “freedmen” during the reconstruction period.
Explanation:
Freedmen's Bureau period is (1865 to 1872), during the Reconstruction period after the American Civil War.
A freedman or freed-woman denotes enslaved person who has been released from slavery.
Historical says about the enslaved people were freed either by manumission (got granted freedom by their captor-owners) or emancipation (granted freedom by their part of a larger group).
Popular name for the ‘United States Bureau of Refugees’, Abandoned Lands, and Freedmen, established by political parties like Congress to provide practical aid to 4,000,000 newly freed African and Americans in their transition from ‘slavery to freedom’.