Irfan Habib is professor emeritus of history at Aligarh Muslim University. He is the author of The Agrarian System of Mughal India, 1556–1707 (1963, revised edition 1999); An Atlas of the Mughal Empire (1982); Essays in Indian History: Towards a Marxist Perception (1995); Medieval India: The Study of a Civilization (2007); Economic History of Medieval India, 1200–1500(with collaborators, 2011); and Atlas of Ancient Indian History (with Faiz Habib, 2012). He has coedited The Cambridge Economic History of India, Vol. I; UNESCO’s History of Humanity, Vols. 4 and 5; and UNESCO’s History of Central Asia, Vol. 5. He is the general editor of the People’s History of India series.