What caused South Carolina to secede?

- Slavery: South Carolina was a slave state, and its economy was heavily dependent on the institution of slavery. Many South Carolinians believed that the election of Abraham Lincoln, who opposed the expansion of slavery into new territories, threatened the future of slavery in the state.

- States' Rights: South Carolina also seceded in response to the federal government's increasing power over states' rights. Many South Carolinians believed that the federal government was infringing on the state's sovereignty and that secession was necessary to protect its autonomy.

- Nullification: South Carolina had a long history of nullification, which is the doctrine that a state has the right to declare a federal law null and void within its borders. In 1832, South Carolina had threatened to secede over the federal government's tariff policy, and many South Carolinians believed that secession was justified in the face of what they saw as an overreach of federal power.

- Cultural and Economic Differences: South Carolina had a distinct cultural and economic identity from the rest of the country. The state had a strong agricultural economy, and its social structure was based on a patriarchal, plantation-owning elite. Many South Carolinians felt that their way of life was under threat from the more industrialized, urbanized, and diverse North.

- Sectionalism: By 1860, the United States was deeply divided along sectional lines. The North and South had different economies, social structures, and political ideologies. South Carolina was one of the most extreme states in the Deep South, and its leaders were determined to protect their interests against what they saw as an increasingly hostile Northern majority.