History of silk and in part replaced natural silk. Following the crisis in Europe, the modernization of sericulture in Japan made it the world's foremost silk producer. By the early 20th century, rapidly industrializing Japan was producing as much as 60 percent of the world's raw silk, most exports shipping through the port of Yokohama. Italy managed to rebound from the crisis, but France was unable. Urbanization in Europe saw many French and Italian agricultural workers leave silk growing for more lucrative factory work. Raw silk was imported from Japan to fill the void. Asian countries, formerly exporters of raw materials (cocoons and
Byzantine silk of Justinian I, the manufacture and sale of silk became an imperial monopoly, only processed in imperial factories, and sold to authorized buyers. Byzantine silks are significant for their brilliant colours, use of gold thread, and intricate designs that approach the pictorial complexity of embroidery in loom-woven fabric. Byzantium dominated silk production in Europe throughout the Early Middle Ages, until the establishment of the Italian silk-weaving industry in the 12th century and the conquest and break-up of the Byzantine Empire in the Fourth Crusade (1204). In the time of the Roman Empire, silk textiles reached the West overland via the