Which Constitutional amendment abolished slavery?

The Thirteenth Amendment is the correct choice because it explicitly abolished slavery and involuntary servitude in the United States. Ratified on December 6, 1865, this amendment marked a significant legal and moral turning point by officially ending an institution considered a fundamental violation of human rights.

The other amendments listed address different issues related to civil rights and the democratic process. The Fourteenth Amendment, for instance, focuses on citizenship rights and equal protection under the law, while the Fifteenth Amendment prohibits denying the right to vote based on race, color, or previous condition of servitude. The Nineteenth Amendment grants women the right to vote. Each of these amendments plays an important role in advancing civil liberties, but none directly addresses the abolition of slavery as the Thirteenth Amendment does.