During the eleventh to thirteenth centuries, Islamic conquest and trade laid the foundation for a new type of Indo-Islamic society in which the organizational forms of the frontier and of sedentary agriculture merged in a way that was uniquely successful in the late medieval world at large, setting the Indo-Islamic world apart from the Middle East and China in the same centuries.Please note that<i>The Slave Kings and the Islamic Conquest, 11th-13th Centuries</i> was previously published by Brill in hardback (ISBN 90 04 10236 1, still available).