The document summarizes key events leading up to and during the American Civil War from 1861 to 1865. It discusses the economic and political divisions between the Northern and Southern states around the issue of slavery. As tensions rose, the Republican party was formed in opposition to slavery while Southern states began seceding from the Union. The Civil War began in 1861 with the Confederate attack on Fort Sumter, and major battles like Bull Run and Antietam resulted in high casualties. The war ended in 1865 with General Lee's surrender at Appomattox Court House after key Union policies like the Emancipation Proclamation and Homestead Act.