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Julie Greene is professor of history and Founding Co-Director, with Ira Berlin, of the Center for Global Migration Studies at the University of Maryland at College Park. She teaches courses on the history of labor, immigration, and global migrations. Julie received degrees in history from the Universities of Michigan, Cambridge, and Yale. She is the author of The Canal Builders: Making America's Empire at the Panama Canal (The Penguin Press, 2009). The Canal Builders was honored to receive the Organization of American Historians' Award for the Best Book on the History of Race Relations.