What reason did the state of South Carolina give for seceding from the union?

South Carolina seceded from the Union on December 20, 1860, primarily citing the perceived threat to slavery and their states' rights. The state argued that the federal government was infringing upon their rights and interests, particularly due to the election of Abraham Lincoln, whom they viewed as hostile to the institution of slavery. South Carolina's declaration emphasized their belief in the right to withdraw from the Union to protect their way of life and autonomy.