In the last thirty years, there have been fierce debates over how civilizations develop and why the West became so powerful. The Measure of Civilization presents a brand-new way of investigating these questions and provides new tools for assessing the long-term growth of societies. Using a groundbreaking numerical index of social development that compares societies in different times and places, award-winning author Ian Morris gives a sweeping examination of Eastern and Western development across 15,000 years since the end of the last ice age. He offers surprising conclusions about when and why the West came to dominate the world and fresh perspectives for thinking about the twenty-first century. Resolving some of the biggest debates in global history, The Measure of Civilization puts forth innovative tools for determining past, present, and future economic and social trends.