A History of the Greater United States

Guest: Daniel Immerwahr, Associate Professor of History, Northwestern University, and author of "How to Hide an Empire: A History of the Greater United States" Generally when Americans think of their borders, a familiar shape comes to mind—the one beginning with California and ending with Florida. But what about Guam and Puerto Rico? How about the Philippines during WWII? US influence reaches far beyond the borders of its 50 states. Daniel Immerwahr of Northwestern University explains why we might want to refer to all of this as "the greater United States."