EXAMBUSTERS US-American History Study Cards . . . Fundamental Concepts Review! Over 350 questions and answers compiled by professional educators with a focus on exam preparation. Highlight the essential US history facts and concepts you need to know to test well. Prepare for quizzes, tests, AP, GED, CLEP, SAT II. Topics: Discovery, Colonial Era, Revolutionary Era, Early National Era, Age of Expansion, Civil War, Reconstruction, Industrial Era, Progressive Era, World War I, The 20's, The Depression, World War II, Cold War, The 1950s through the 1980s, New World Order.