John C. (John Caldwell) Calhoun

Born in South Carolina in 1782, John C. Calhoun became one of the most influential and controversial political figures in the United States before the Civil War. Educated at Yale and trained in law, he rose quickly in public life and built a reputation as a sharp political thinker and powerful speaker.

Over the course of his career, he served in the House of Representatives, as secretary of war, as vice president under both John Quincy Adams and Andrew Jackson, in the Senate, and briefly as secretary of state. Early on, he supported a stronger national government and economic development, but in later years he became the leading defender of states' rights, nullification, and the interests of the slaveholding South.

Calhoun remains a central figure in American history because his ideas helped define the political conflicts that pushed the country toward sectional crisis. He is remembered not only for his extraordinary reach in government, but also for his outspoken defense of slavery, which makes his legacy deeply important and deeply troubling.