Final answer:
The Thirteenth Amendment of the Constitution outlawed slavery.
Step-by-step explanation:
The Thirteenth Amendment of the Constitution accomplished outlawing slavery. It was passed by the U.S. Congress in 1865, shortly after the American Civil War. The amendment states that 'neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.'
This amendment effectively abolished slavery and was a significant step towards ending the institution of slavery in the United States. It provided the legal basis for emancipation and the liberation of millions of enslaved individuals.
Learn more about Outlawing slavery