"In The Silk Road, Valerie Hansen describes the archeological finds that revolutionize our understanding of these trade routes. Hansen explores seven oases along the road, from Xi'an to Samarkand, where merchants, envoys, pilgrims, and travelers mixed in cosmopolitan communities, tolerant of religions from Buddhism to Zoroastrianism. There was no single, continuous road, but a chain of markets that traded between east and west. China's main partners...