The Civil War began on April 12, 1861 when Confederate forces attacked Fort Sumter in South Carolina. In response, President Lincoln called for troops from the Northern states to put down the Southern uprising. Another key early event was Virginia deciding to join the Confederacy, giving the South an important state both economically and militarily. The Union had significant advantages over the Confederacy in population, manufacturing, railroads, and other industrial resources. However, the Confederacy had skilled generals and the motivation to fight defensively to protect their homes. The first major battle of the war, at Bull Run near Washington D.C., was a surprising Confederate victory that showed the war may not be as short as the Union expected.