The north blocked off all port to prevent south from getting supplies.
This began the Civil War
Virginia seceded first and within 5 weeks so had Arkansas, Tennessee, and North Carolina.
President Lincoln issues a Proclamation of Blockade against Southern ports
The Seven Days Battles as Lee attacks McClellan near Richmond, resulting in very heavy losses for both armies. McClellan then begins a withdrawal back toward Washington.
The bloodiest day in U.S. military history as Gen. Robert E. Lee and the Confederate Armies are stopped at Antietam in Maryland by McClellan and numerically superior Union forces.
The tide of war turns against the South as the Confederates are defeated at the Battle of Gettysburg in Pennsylvania
President Lincoln delivers a two minute Gettysburg Address at a ceremony dedicating the Battlefield as a National Cemetery.
Set Atlanta on fire and completely destroyed the city.