Slave grown accounted for over half the value of United States exports and provided most of the cotton used in the northern textile industry and 70 percent of the cotton used in British mills. Slave-produced commercial crops required a host of middlemen to sell and transport them to markets and to finance and supply the slave-owning planters. Southern cities such as New Orleans, Mobile, Savannah, Charleston, and Memphis and northern ports such as New York, Boston, and Philadelphia depended heavily on the southern trade. Northern farmers and manufacturers found ready markets for their products in southern towns and cities, but especially on the southern plantations. If the products of slave labor stimulated the nations’ economic development, the slave South itself remained primarily agricultural and did not experienced the urban and industrial growth that took place in the…