Which amendment to the Constitution abolished slavery?

The 13th Amendment to the United States Constitution, ratified in 1865, specifically abolished slavery and involuntary servitude, except as punishment for a crime. This amendment marked a significant turning point in American history, as it was a key outcome of the Civil War and the broader movement towards civil rights. Its passage legally freed millions of enslaved African Americans, fundamentally changing the social and economic structure of the United States.

In contrast, the 15th Amendment focuses on prohibiting the denial of the right to vote based on race, color, or previous condition of servitude. The 19th Amendment grants women the right to vote, and the 21st Amendment repeals Prohibition. Each of those amendments addresses different aspects of rights and freedoms but does not pertain to the abolition of slavery. Thus, the 13th Amendment is accurately recognized as the constitutional change that ended the legal institution of slavery in the United States.