Introduction PART ONE: HISTORIES The Unification of Upper and Lower Egypt The Great Wall of China and the Border as Unifier Why is Europe Not a Peninsula in Asia? The Roman Limes and the Power of the Periphery The Legacies of Charlemagne The Borders of Great Britain Of Feudalism, Marquises, Margraves, and Marcher Lords The Open Borders Policies of Genghis Khan Spain and Portugal Carve up the World Holy, Roman and an Empire Britain, Ireland, and the Invention of Cartographic Colonialism The Much Misunderstood Mason?Dixon Line The Local Government Reforms of Emperor Napoleon I The American Invasion of Mexico The Schleswig-Holstein Business ". Where No White Man Ever Trod" The Sudan?Uganda Border Commission, 1913 European Nationalism and the United States of Greater Austria Britain and France Carve up the Middle East The Partition of Ulster, 1916?22 The Partition of India, 1947 The Iron Curtain and the Division of Berlin, 1945?90 PART TWO: LEGACIES Koenigsberg/Kaliningrad, Eastern Germany/Western Russia The Strange Case of Bir Tawil The Dangers of Gardening in the Korean DMZ China's Nine-dash Line and Its Discontents The Uncertain Borders Between Israel and Palestine The Siamese Twin Towns of Baarle-Hertog and Baarle-Nassau The US?Canada border, and the Trouble with Straight Lines Some Places Which Aren't Switzerland Some Notes on Microstates City Limits The Curse of Suburbia and the Borders of Detroit Washington, DC and the Square Between the States Borders from a Land Down Under Some Accidental Invasions Costa Rica, Nicaragua and the "Google Maps War" The Mapmaker's Dilemma PART THREE: EXTERNALITIES A Brief History of the Prime Meridian Some Notes on Time Zones A Brief History of the International Date Line Of Maritime Boundaries and the Law of the Sea Some Notes on Landlocked Countries How the World Froze Territorial Claims in Antarctica The Other, Bigger, More Musical Europe Boundaries in the Air The Final Frontier Conclusion: The End of the Line Sources Acknowledgements Index.