Tim Cleaveland earned his Ph.D. from Northwestern University and teaches history at the University of Georgia. He has published articles in the Journal of African History, the Canadian Journal of African Studies and the Journal of North African Studies, and is the author of Becoming Walata: A History of Saharan Social Formation and Transformation. He is currently working on a history of race, gender and slavery in Islamic West Africa, and is particularly interested in how milk-kinship affected the social relations of slavery.