Answer:
Freedmen's Bureau, (1865–72), during the Reconstruction period after the American Civil War, popular name for the U.S. Bureau of Refugees, Freedmen, and Abandoned Lands, established by Congress to provide practical aid to 4,000,000 newly freed African Americans in their transition from slavery to freedom.
Explanation:
Gunpowder in Tang and moveable wooden type in Song.
Answer: any large ancient Roman agricultural estate that used a large number of peasant or slave laborers.
The Nazi party targeted Jews, Slavs, homosexuals, people with physical or mental disablities (such as Down Syndrome).
