What did south Carolina do after Lincoln won the election of 1860 and why?

After Abraham Lincoln won the election of 1860, South Carolina became the first state to secede from the Union on December 20, 1860. They believed Lincoln's victory threatened the institution of slavery, which was integral to their economy and social order. The state's leaders felt that secession was necessary to protect their rights and maintain their way of life, leading to the eventual outbreak of the Civil War.