The Compromise that required all states to return fugitive slaves to their owners is
c. The Three-Fifths Compromise
Explanation:
The Three-Fifths Compromise was proposed by Wilson and American Revolutionary leader, UN agency was each delegate for the Constitutional Convention of 1787. However, the Three-Fifth Compromise has its strong roots more back in history, chemical analysis back to the Continental Congress in 1783. The Compromise was a result of the apportioning of taxes being associated with land values.
Initially, taxes were levied not in accordance with the population numbers, however the particular price of the land.