The document provides an overview of the American Civil War, including what started it, the presidents of the Union and Confederacy, key generals of each side, famous battles, contrasts between the Union and Confederacy, and what ultimately ended the war. It discusses the economic and social differences between the north and south that led to states' rights issues over slavery and the election of Abraham Lincoln. The presidents, generals, battles, and contrasts between the two sides are described. The war ended when Confederate General Edmund Kirby Smith surrendered the last Confederate army west of the Mississippi in 1865.