Answer:
The 13th to 15th amendments of the U.S. Constitution extended citizenship and voting rights to former slaves
Step-by-step explanation:
The Thirteenth, Fourteenth and Fifteenth Amendment were a series of Amendment enacted during the Reconstruction Era that aimed at recognizing the basic liberties of all race, especially of black people, the most discriminated minority group back then.
The 13th Amendment abolished slavery and any other system of involuntary servitude (which had been so common in the United States), the 14th Amendment extended citizenship to former slaves and the 15th Amendment protected citizen's right to vote regardless of their race, color, or previous condition of servitude.