uring the T'ang Dynasty, trade along the Silk Road had declined. It revived tremendously under the Sung Dynasty in the eleventh and twelfth centuries when China became largely dependent on its silk trade. In addition, trade to Central and Western Asia as well as Europe recovered for a period of time from 1276-1368 under the Yuan Dynasty when the Mongols controlled China. The Chinese traded silk for medicines, perfumes, and slaves in addition to precious stones. As overland trade became increasingly dangerous, and overseas trade became more popular, trade along the Silk Road declined. While the Chinese did maintain a silk-fur trade with the Russians north of the original Silk Route, by the end of the fourteenth century, trade and travel along the road had decreased. ...