Three-Fifths
The "Three-Fifths Compromise" was an agreement reached during the 1787 Constitutional Convention in the United States. It determined how enslaved individuals would be counted for purposes of taxation and representation in Congress. Under this compromise, each enslaved person would be counted as three-fifths of a person.
This compromise was significant because it affected the political power of Southern states, which had large populations of enslaved people. By counting them partially, Southern states gained more representation in the House of Representatives without fully acknowledging their status as citizens. The compromise was eventually rendered obsolete by the 13th Amendment, which abolished slavery.