The map shows the routes of the Silk Road. A map titled The Silk Road. A key shows different types of goods traded, the main Silk Road with a red line, other overland routes of the Silk Road with a green line, and sea routes of the Silk Road with a purple line. Red, green, and purple lines travel from Japan to Korea, through China, India, Persia, The Byzantine Empire, and Egypt.

How far did the Silk Road trade routes extend?