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-- The Silk Road was a network of trade routes from the Far East to the Mediterranean. Its extent stretched from the city of Chang'an (modern day Xi'an) in China to Constantinople. The term Silk Road was coined by Baron Ferdinand von Richthofen, a German geographer.
The Great Silk Road first operated as a route between China and the capital of the Roman Empire in the 2nd century BC. It was approximately 7000 kilometers long. The most valuable commodity imported from China was silk, which is an obvious explanation why this entire transcontinental trade route was named The Silk Road.