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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.
There are at least 25 million children worldwide in a sexual form of slavery every year. There are more children in other forced labor, and there are adults as well. Legally slavery is abolished in the USA, however it still exists. Slavery has never disappeared. In the U.S., Lincoln's Emancipation Proclamation freed the slaves within the Confederacy on January 1, 1863. Lincoln was concerned that this was done under his war powers and might not stand in peacetime.