A magisterial, myth-dispelling history of Islamic Spain spanning the millennium between the founding of Islam in the seventh century and the final expulsion of Spain's Muslims in the seventeenth. In Kingdoms of Faith, award-winning historian Brian A. Catlos rewrites the history of Islamic Spain from the ground up, evoking the cultural splendor of al-Andalus, while offering an authoritative new interpretation of the forces that shaped it. Prior accounts have portrayed Islamic Spain as a paradise of enlightened tolerance or the site where civilizations clashed. Catlos taps a wide array of primary sources to paint a more complex portrait, showing how Muslims, Christians, and Jews together built a sophisticated civilization that transformed the Western world, even as they waged relentless war against each other and their coreligionists. Religion was often the language of conflict, but seldom its cause-a lesson we would do well to learn in our own time.