How long after the civil war did slavery end in the u.s.?
Slavery in the US ended with the Emancipation Proclamation in 1863 before the Civil War ended. If one were to include the South into the definition of the United States at that time, then it would be in 1865 at the end of the Civil War when the Confederacy was defeated. Alternatively, one could consider the national acceptance of the 13th Ammendment to the US Constitution in 1866 that banned slavery. All of these answers are correct although the 13th Constitutional Ammendment is most definitive.
