Abraham Lincoln (/ ˈ l ɪ ŋ k ən / LINK-ən; February 12, 1809 – April 15, 1865) was the 16th president of the United States, serving from 1861 until his assassination in 1865. He led the United States through the American Civil War, defending the nation as a constitutional union, defeating the Confederacy, playing a major role in the …