Jonn Elledge's previous books include The Compendium of (Not Quite) Everything and Conspiracy: A History of Boll*cks Theories, and How Not to Fall for Them. At the New Statesman he created and ran its urbanism-focused CityMetric site, spending six happy years writing about cities, maps, and borders. He lives in London.

Every border tells a surprising story in this uncommonly enlightening history that will change the way you understand the world