He contributed to the development of American society from the end of the 15th century to the 18th century. Although slavery was bad for some people, others saw it as necessary to grow and develop this country. Works cited by Roark, Michael P. Johnson, Patricia Cline Cohen, Sarah Stage, Susan M. Hartman. The American Promise: A History of the United States. Fifth edition, value edition. 2009 p. 365Horton, James Oliver and Horton, Lois E. Slavery and the Making of America. (2005) ISBN 0-19-517903-XMoore, Wilbert Ellis, American Negro Slavery and Abolition: A Sociological Study, Ayer Publishing, 1980 Catherine M. Lewis and J. Richard Lewis: Women and Slavery in America: A History documentary "27b. Life of the slave and codes of the slave. Life of the slave and codes of the slave [ushistory.org]. Np, and Web. October 28, 2013. “What was the 2nd middle passage ? » The Root. October 28, 2013. Aptheker, Herbert. New York: Intercontinental Publisher, Fath Davis. Slave Labor Division. D. Nat Turner. American Heritage, 2006Staff, Virginia Historic Landmarks Commission. National Register of Historic Places Inventory/Nomination: Virginia Department of Historic Resources.,