Frank L. Holt is professor of history at the University of Houston. His previous books include The Treasures of Alexander the Great: How One Man's Wealth Shaped the World, Lost World of the Golden King: In Search of Ancient Afghanistan, and Into the Land of Bones: Alexander the Great in Afghanistan.
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Coinage—it is one of the most successful and consistent technologies ever invented. Nothing else we still use in everyday life has a history quite like it. Look around at all the things that would bewilder a Greek, Roman, or Renaissance ancestor; th... SEE MORE