The second volume of The Cambridge History of America and the World examines how the United States rose to great power status in the nineteenth century and how the rest of the world has shaped the United States. Mixing top-down and bottom-up perspectives, insider and outsider views, cultural, social, political, military, environmental, legal, technological, and other veins of analysis, it places the United States, Indigenous nations, and their peoples in the context of a rapidly integrating world. Specific topics addressed in the volume include nation and empire building, inter-Indigenous relations, settler colonialism, slavery and statecraft, the Mexican-American War, global integration, the antislavery international, the global dimensions of the Civil War, overseas empire-building, state formation, international law, global capitalism, border-crossing movement politics, technology, health, the environment, immigration policy, missionary endeavors, mobility, tourism, expatriation, cultural production, colonial intimacies, borderlands, the liberal North Atlantic, US-African relations, Islamic world encounters, the US island empire, the greater Caribbean world, and transimperial entanglements. ‘Let me be clear from the start: this is a wonderful collection….The fluidity of interpretation, conceptual precision, clarity of the exposition, and efficiency of the analysis is excellent…. It is a stimulating and engaging volume, full of interest, insight, and impressive synthesis.’ Stephen Tuffnell, H-Diplo This volume examines US empire-building and other aspects of its relationship with the world in the nineteenth century. Kristin Hoganson is the Stanley S. Stroup Professor of United States History at the University of Illinois, Urbana-Champaign. She is the author of several previous books, including Fighting for American Manhood: How Gender Politics Provoked the Spanish-American and Philippine-American Wars (2000); Consumers' Imperium: The Global Production of American Domesticity 1865-1920 (2007); The Heartland: An American History (2019); and co-editor (with Jay Sexton) of Crossing Empires: Taking US History into Transimperial Terrain (2020). Jay Sexton is the Kinder Institute Chair of Constitutional Democracy at the University of Missouri. He is the author of Debtor Diplomacy: Finance and American Foreign Relations in the Civil War Era, 1837-1873 (2005); The Monroe Doctrine: Nation and Empire in Nineteenth-Century America (2011); A Nation Forged by Crisis: A New American History (2019); as well as several collaborative volumes that probe global dimensions of American history including (with Kristin Hoganson) Crossing Empires: Taking US History into Transimperial Terrain (2020).