​ officially abolished slavery in all areas of the United States ​ granted African American men the right to vote ​ granted African Americans in the United States citizenship

The 13th Amendment to the United States Constitution officially abolished slavery in all areas of the country. It was ratified on December 6, 1865, following the end of the American Civil War.

The 15th Amendment to the United States Constitution granted African American men the right to vote. It was ratified on February 3, 1870, and specifically prohibited any government from denying a citizen the right to vote based on "race, color, or previous condition of servitude."

The 14th Amendment to the United States Constitution granted citizenship to all persons born or naturalized in the United States, including African Americans. It was ratified on July 9, 1868, and provided equal protection under the law for all citizens.