The Civil War is the central event in U.S. history. More than any other event, the war defined the United States as a nation and as a people. What the United States is today, how it views the role of its national government in its daily life, how it interprets its relations within its diverse population, and how it has evolved as a world power are largely the results of the cataclysmic struggle that shook the American republic in the mid-19th century...