If in the year 1411 you had been able to circumnavigate the globe, you would have been most impressed by the dazzling civilizations of the Orient. The Forbidden City was under construction in Ming Beijing; in the Near East, the Ottomans were closing in on Constantinople. By contrast, England would have struck you as a miserable backwater ravaged by plague, bad sanitation and incessant war. The other quarrelsome kingdoms of Western Europe ? Aragon, Castile, France, Portugal and Scotland ? would have seemed little better. As for fifteenth-century North America, it was an anarchic wilderness compared with the realms of the Aztecs and Incas. The idea that the West would come to dominate the Rest for most of the next half millennium would have struck you as wildly fanciful. And yet it happened. What was it about the civilization of Western Europe that allowed it to trump the outwardly superior empires of the Orient? The answer, Niall Ferguson argues, was that the West...