Kelvin Case

More Than Silk: How the Silk Road Carried Disease, Religion, and Technology Across Eurasia

The Silk Road is popularly remembered as a conduit for luxury goods: bolts of silk, jars of spice, and porcelain packed into camel saddlebags moving between China and the Mediterranean. That picture is not wrong, but it is badly incomplete. The same roads, river crossings, oasis towns, and caravanserais that carried silk also carried things nobody had packed on purpose. Fleas riding on marmots and grain sacks carried *Yersinia pestis* out of the Central Asian steppe and, centuries later, into the crowded cities of Europe. Buddhist monks, Nestorian Christian missionaries, and Muslim traders carried scripture, liturgy, and law along the same routes their goods traveled, converting entire steppe confederations in the process. Papermaking, gunpowder, and printing moved from Chinese workshops into Islamic and then European hands, arguably reshaping the trajectory of world history more than any bolt of cloth ever did. This article draws on recent archaeogenetic research, religious history, and the history of technology to argue that the Silk Road's deepest legacy was not commercial but infrastructural: it built a durable set of human and animal connections across Eurasia, and those connections carried whatever was capable of moving along them, wanted or not. The article closes by considering what this braided history of contagion, conversion, and invention suggests about how connectivity itself, rather than any single good, is the true unit of historical analysis.