Marc Egnal will discuss his book, Clash of Extremes: The Economic Origins of the Civil War. He is an American historian, academic and currently a professor of history at York University, Toronto, Canada. He specializes on the American Revolution and American Civil War. He is the author of four books on American History including A Mighty Empire: The Origins of the American Revolution (1988); Divergent Paths: How Culture and Institutions Have Shaped North American Growth (1996); and New World Economies:the Growth of the Thirteen Colonies and Early Canada (1998). His most recent work is Clash of Extremes: The Economic Origins of the Civil War (2009). This book argues that "more than any other reason, the evolution of the Northern and Southern economies explains the Civil War."