Kaplan AP U.S. History Flash Review features:Targeted review of all topics, from the Colonial Era to the Modern EraThe 600 most-tested events, people, documents, and terms on the AP U.S. History examContent written and reviewed by top AP expertsA thematic approach, with terms sorted and coded by historical eraThe flash review questions are organized into the following five categories: The New World to the American Revolution, The New Nation to the Civil War, Reconstruction to the Great War, The 1920s to World War II, and The Cold War to the New Millennium.