The document discusses many of the key events and issues that led to the outbreak of the American Civil War. It outlines the divisive issues of slavery and states' rights that increased tensions between the North and South. It also summarizes several important compromises and crises over several decades that failed to resolve conflicts between free and slave states over the expansion of slavery into new territories. The document then provides an overview of the Civil War itself, including the sides that were chosen, preparations for war, major battles, the Emancipation Proclamation, African American involvement, and Lincoln's assassination.