How Islam Created EuropeIslam did much more than geographically define Europe, however. Denys Hay, a British historian, explained in a brilliant though obscure book published in 1957, Europe: The Emergence of an Idea, that European unity began with the concept (exemplified by the Song of Roland) of a Christendom in “inevitable opposition” to Islam—a concept that culminated in the Crusades. The scholar Edward Said took this point further, writing in his book Orientalism in 1978 that Islam had defined Europe culturally, by showing Europe what it was against. Europe’s very identity, in other words, was built in significant measure on a sense of superiority to the Muslim Arab world on its periphery. Imperialism proved the ultimate expression of this evolution: Early modern Europe, starting with Napoleon, conquered the Middle East, then dispatched scholars and diplomats to study Islamic civilization, classifying it as something beautiful, fascinating, and—most crucial—inferior.