It might be difficult today to imagine the United States as a true colonial power, but in the years following the 1898 Spanish-American War, the U.S. became a major global power. The idea of American Imperialism crept into the public consciousness for the first time. During the war, the United States captured several key Spanish possessions, including Puerto Rico, Guam, and the Philippines.  The War in the Philippines At first, it looked as if the U.S. was fighting to grant the...