Answer:
After the Civil War, with the protection of the Thirteenth, Fourteenth, and Fifteenth Amendments to the Constitution and the Civil Rights Act of 1866, African Americans enjoyed a period when they were allowed to vote, actively participate in the political process, acquire the land of former owners, seek their own employment, and use public accommodations. Opponents of this progress, however, soon rallied against the former slaves' freedom and began to find means for eroding the gains for which many had shed their blood.
Step-by-step explanation
During the decade known as Radical Reconstruction (1867-77), Congress granted Black American men the status and rights of citizenship, including the right to vote, as guaranteed by the 14th Amendment and 15th Amendment to the U.S. Constitution.