Clinical review articles, also known as updates, differ from systematic reviews and meta-analyses in important ways.1 Updates selectively review the medical literature while discussing a topic broadly.
Eventually, the Emancipation Proclamation led to the proposal and ratification of the Thirteenth Amendment to the Constitution, which formally abolished slavery throughout the land.
As a correction, the Emancipation Proclamation, enacted by Lincoln in 1863, only freed the slaves in those states that were rebelling. Because the Union only controlled some small portions of the south at the time, only a small number of slaves were immediately freed. Slavery everywhere in the US wasn't abolished until the ratification of the 13th amendment in 1865, and there were still some slaves in the northern states who weren't freed until then.