" By 1860, two of every three of the relatively few Americans whose wealth surpassed $100,000 lived below the Mason-Dixon Line. New York at that time had fewer millionaires per capita than Mississippi. South Carolina was the richest state in the Union. The source of southern wealth was staple crops—particularly cotton—produced by enslaved men, women, and children for world markets. So matchless were the profits that more money was invested in slaves than in industry and railroads. "

― , Democracy in Chains: The Deep History of the Radical Right's Stealth Plan for America