Book excerpt: Recent bestsellers by Niall Ferguson and John Keegan have created tremendous popular interest in World War I. In America's Great War prominent historian Robert H. Zieger examines the causes, prosecution, and legacy of this bloody conflict from a frequently overlooked perspective, that of American involvement. This is the first book to illuminate both America's dramatic influence on the war and the war's considerable impact upon our nation. Zieger's engaging narrative provides vivid descriptions of the famous battles and diplomatic maneuvering, while also chronicling America's rise to prominence within the postwar world. On the domestic front, Zieger details how the war forever altered American politics and society by creating the National Security State, generating powerful new instruments of social control, bringing about innovative labor and social welfare programs, and redefining civil liberties and race relations. America's Great War promises to become the definitive history of America and World War I.