Henry Clay in Causes of the Civil War
Henry Clay (1777-1852), who has been called the "Great Pacificator" and the "The Great Compromiser," was a U.S. congressman, senator, statesman, and a twice-unsuccessful presidential candidate from the Whig Party (in 1832 and 1844).
He was one of the most prominent congressmen in American history and played a central role in shaping and ensuring passage of the most critical sectional compromises of the antebellum period: the Missouri Compromise in 1820, the Tariff of 1833 that ended the Nullification Crisis, and the Compromise of 1850.