Steven Hahn is Professor of History at New York University. He has written on the South, slavery and emancipation, the Populist Era, rural cultures, and social migration. His books include The Roots of Southern Populism: Yeoman Farmers and the Transformation of the Georgia Upcountry, 1850-1890 (1983), A Nation Under our Feet: Black Political Struggles in the Rural South from Slavery to the Great Migration (2004)–which received the Pulitzer Prize for history that year, The Political Worlds of Slavery and Freedom (2009), and A Nation without Borders: The United States and Its World in an Age of Civil Wars (2016).