Adolf Hitler was democratically elected by the German people, was appointed chancellor of a coalition government, then immediately began dismantling democratic institutions throughout the nation. He became a dictator at first through deft compromise, followed by political daring then persuasive force. As one high-ranking Nazi official said, the dominance of Hitler and Nazism happened as planned but much sooner than even they expected. In "The Hitler Years: Triumph 1933-1939," Frank McDonough jumps right into Adolf Hitler coming to power in January 1933. McDonough shares some background about Hitler and his Nazi cohorts but the historian remains true to the mission...