New research changes our understanding of who built ancient Silk Roads

Nature

The Silk Road was a series of ancient trading routes that spanned Asia, reaching as far as the Middle East and Europe. Self-organizing and vast, it fell under the control of various empires—but never for long. The polyglot civilizations of traders who lived along its routes are the subject of legends, and more recently the Silk Road lent its name to an infamous darknet market. Historians usually date the Silk Road from roughly the 200s to the 1400s. But a new study in Nature suggests the trade routes may be 2,500 years older than previously believed and its origins much humbler than the rich cities it spawned.

Historical accounts of the Silk Road begin in China in the 100s, when the Han Dynasty used its many routes to trade with the peoples of Central and South Asia. Han soldiers protected the roads and maintained regular outposts on them, allowing wealth and knowledge to flow across the continent. Monks wandering the Silk Road brought Buddhism from India to China, while merchants brought spices, gems, textiles, books, horses, and other valuables from one part of the continent to the other. Great Silk Road cities such as Chang'an (today called Xi'an) and Samarkand grew fat on wealth from the routes that passed outside their walls.

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