One reason these states seceded from the Union was that they?

One reason these states seceded from the Union was that they sought to protect the institution of slavery, which they viewed as essential to their agricultural economies and social order. They believed that the federal government was increasingly encroaching on their rights and interests, particularly with the election of Abraham Lincoln, whom they viewed as a threat to the continuation of slavery. This desire for autonomy and the preservation of their way of life ultimately drove them to break away from the Union.