Diodoros of Sicily's book XIX is the main source for the history of the Diadochoi, Alexander the Great's Successors, from 317 to 311 BCE. With the first full-scale commentary on this text in any language Alexander Meeus offers a detailed and reliable guide to the complicated historical narrative and the fascinating ethnographic information transmitted by Diodoros, which includes the earliest accounts of Indian widow burning and Nabataean culture. Studying both history and historiography, this volume elucidates a crucial stage in the creation of the Hellenistic world in Greece and the Near East as well as the confusing source tradition. Diodoros, a long neglected author indispensable for much of our knowledge of Antiquity, is currently enjoying growing scholarly interest. An ample introduction discusses his historical methods and sheds light on his language and style and on the manuscript transmission of books XVII-XX. By negotiating between diametrically opposed scholarly opinions a new understanding of Diodoros' place in the ancient historiographical tradition is offered. The volume is of interest to scholars of ancient historiography, Hellenistic history, Hellenistic prose and the textual transmission of the Bibliotheke.