Final answer:
The 13th Amendment freed the slaves and abolished slavery in the United States.
Step-by-step explanation:
The Amendment that freed the slaves in the United States is the 13th Amendment. It was ratified on December 6, 1865, and abolished slavery and involuntary servitude, except as punishment for a crime. This Amendment played a vital role in ending one of the darkest chapters in American history.
Learn more about The emancipation of slaves in the United States