1. The Emancipation Proclamaiton
Pamphleteers North and South rarely mentioned the tariff, and when some did, for instance, Matthew Fontaine Maury and John Lothrop Motley, they were writing for a foreign audience. ... The fourth theory was advocated by Mississippi Senator Jefferson Davis, one of state sovereignty, also known as the "Calhoun doctrine," named after the South Carolinian political theorist and statesman John C. ...