American Civil War: The Battle of Fredericksburg begins as the Army of the Potomac under Union General Ambrose Burnside crosses the Rappahannock River to clash with the Army of Northern Virginia led by Confederate General Robert E. Lee in Fredericksburg, Virginia.

The American Civil War was a civil war in the United States between the Union and the Confederacy, which was formed in 1861 by states that had seceded from the Union to preserve slavery in the United States. The South saw slavery as threatened because of the election of Abraham Lincoln and the…