1. Introduction: legacies of empire Sandra Halperin and Ronen Palan; Part I. Incomplete Transitions from Empires to Nation-States: 2. Political military legacies of empire in world politics Tarak Barkawi; 3. The second British Empire and the re-emergence of global finance Ronen Palan; 4. Imperial city-states, national states, and post-national spatialities Sandra Halperin; Part II. Legacies of Non-European Empires in Today's World: 5. The legacy of Eurasian nomadic empires: remnants of the Mongol imperial tradition Einar Wigen and Iver B. Neumann; 6. The modern roots of feudal empires: the donatory captaincies and the legacies of the Portuguese Empire in Brazil Benjamin De Carvalho; 7. Imperial legacies in the United Nations development program, and the UN development system Craig N. Murphy; Part III. The Future Legacies of the American Empire: 8. Foreign bases, sovereignty and nation-building after empire: the United States in comparative perspective Alexander Cooley; 9. Empire, capital and a legacy of endogenous multiculturalism Herman Schwartz; 10. The assemblage of American imperium: hybrid power, world war and world government(ality) in the twenty-first century Ronnie D. Lipschutz; 11. Conclusion Sandra Halperin and Ronen Palan.