David Northrup was Professor of History at Boston College for four decades and has published widely in African, Atlantic, and world history. He is the co-author of The Diary of Antera Duke: An Eighteenth-Century African Slave Trader (2010); author of Africa's Discovery of Europe, 1450-1850, Third Edition (2013), The Atlantic Slave Trade, Third Edition (2011), and Crosscurrents in the Black Atlantic, 1770-1965 (2007); and a contributor to the Oxford Handbook on the Atlantic World, c. 1450-1820 (2009) and the Oxford History of the British Empire (1988, 2004).