Alan Karras, lead media author and author of the Worlds Together, Worlds Apart AP Edition (Ph.D. University of Pennsylvania) is the associate director of International and Area Studies at the University of California at Berkeley and has previously served as chair of the College Board’s test development committee for world history and as co-chair for the College Board’s commission on AP history course revisions. The author and editor of several books, he has written about the eighteenth-century Atlantic World and, more broadly, global interactions that focus on illicit activities like smuggling and corruption. An advocate of linking the past to the present, he is now working on a history of corruption in empires, focusing on the East India Company.
Elizabeth Pollard, lead author of Volume 1 Full and Concise (Ph.D., University of Pennsylvania) is Distinguished Professor for Teaching Excellence at San Diego State University, where she has been teaching courses in Roman History, World History, and witchcraft studies since 2002. Pollard is founding Co-Director of the Center for Comics Studies and co-Champion of Comics and Social Justice for the SDSU President’s Big Ideas Initiative (2020–present). Her research investigates women accused of witchcraft in the Roman world and explores the exchange of goods and ideas between the Mediterranean and the Indian Ocean in the early centuries of the Common Era. Pollard is currently working on two comics-related projects: an analysis of comics about ancient Rome over the last century and a graphic history exploring the influence of classical understandings of witchcraft on their representations in modern comics. She has also published on various pedagogical and digital history topics, including writing about witchcraft on wikipedia, tweeting on the backchannel of the large lecture, and digital humanities approaches to visualizing Roman History. Pollard is also deeply immersed in assessment; she has served as both the assessment coordinator for the Arts and Science Division at San Diego State University and has served as consultant to the College Board. She is also the co-editor of Worlds Together, Worlds Apart: A Companion Reader 4th Edition.
Clifford Rosenberg, lead author of Concise Edition Volume 2 (Ph.D., Princeton University) is associate professor of European history at City College and the Graduate Center, CUNY. Professor Rosenberg specializes in the social and political history of modern Europe, especially France, and on the relationship between the continent and its colonial hinterlands. He has published a book on immigration control and the transformation of citizenship in interwar France. His current research concerns the spread of tuberculosis from France to Algeria and back, and efforts to combat it, from 1830 to the present. He is also the co-editor of Worlds Together, Worlds Apart: A Companion Reader 4th Edition.
Robert Tignor, general editor emeritus (Ph.D., Yale University) is professor emeritus and the Rosengarten Professor of Modern and Contemporary History at Princeton University and the three-time chair of the history department. With Gyan Prakash, he introduced Princeton’s first course in world history thirty years ago. Professor Tignor has taught graduate and undergraduate courses in African history and world history and has written extensively on the history of twentieth-century Egypt, Nigeria, and Kenya. Besides his many research trips to Africa, Professor Tignor has taught at the University of Ibadan in Nigeria and the University of Nairobi in Kenya.
