On December 20, 1860 South Carolina seceded from the Union after it became clear that Abraham Lincoln would become President of the United States of America. South Carolina was the first of the southern states to secede, but it was followed by six others during the secession winter before Lincoln took office. Together with Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas, South Carolina founded the Confederate States of America. In April 1861, the American Civil War began when Confederates attacked Fort Sumter in Charleston Harbor.
The University of South Carolina has digitized 14 collections relating to the Civil War, including South Carolina and the Civil War, The Citadel and the American Civil War, and Reminiscences of the Sixties to name a few. For a national perspective, visit the Opening History aggregation, which contains rich historical collections from across the country.