Silk was cultivated to Japan at least before AD, and, by 552 AD, the Byzantine Empire managed to obtain silkworm eggs and were able to begin silkworm cultivation; the Arabs also began to manufacture silk at the same time. As a result of the spread of sericulture, Chinese silk exports became less important, although they still maintained dominance over the luxury silk market. The Crusades brought silk production to Western Europe, in particular to many Italian states, which saw an economic boom exporting silk to the rest of Europe. Developments in manufacturing technique also began to take place during the Middle Ages (5th to 15th centuries) in Europe, with devices such as the spinning wheel first appearing at this time. During the 16th century, France joined Italy in developing a successful silk trade, though the efforts of most other nations to develop a silk industry of their own were unsuccessful.
