From Ohio History Central
The American Civil War was one of the greatest conflicts in American history.
The war began on April 12, 1861, with the Battle of Fort Sumter in Charleston, South Carolina. The conflict resulted from tensions between the North and the South, principally over the issues of slavery and its expansion, state's rights, and regional economic competition. Since 1820, Northerners and Southerners attempted to politically compromise on these questions. Each side entered into various agreements, including the Missouri Compromise, the Compromise of 1850, and the Kansas-Nebraska Act. While each of these compromises sought to ease tensions, none of them fully solved the problems, namely the slavery issue, that existed between the two regions.