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Confidence votes 139. Slavery was officially abolished in the United States in 1865 (by the enactment of the 13th Amendment to the Constitution), although many states abolished slavery for themselves at various dates between 1777 and 1864 and the transport of new slaves from Africa to the US was stopped as early as 1808.
Confidence votes 22.5K. Slavery ended in 1865, two years after the Emancipation Proclamation. Abraham Lincoln ended slavery in rebel states with the Emancipation Proclamation on January 1, 1863. It should be noted that this was merely a political move as he had no power to do so at the time of this proclamation.