The United States in World War II tells the dramatic story of America's transformation from a cautious, divided nation into a decisive global superpower. Beginning with isolationism and the rise of fascism, this book follows the shock of Pearl Harbor, the massive mobilization of the home front, the injustice of Japanese American incarceration, and the crucial roles of women and African Americans in the wartime economy. It then moves across the battlefields of North Africa, Europe, D-Day, and the Pacific, exploring the courage, sacrifice, strategy, and moral complexity that defined the American war effort. The book concludes with Hiroshima and Nagasaki, victory and loss, and the emergence of the United States as one of the dominant powers of the modern world.