How should America wield its enormous power beyond its borders? Should it adhere to grand principles or act on narrow self-interest? Should it partner with other nations or avoid entangling alliances? Americans have been grappling with questions like these throughout the nation's history, and especially since the emergence of the United States as a major world power in the late nineteenth century. America in the World illuminates this history by capturing the diverse voices and viewpoints of some of the most colorful and eloquent people who participated in these momentous debates.