The Silk Road, which began operating more than two thousand years ago, constituted certainly for many centuries the main cultural and linguistic highway between peoples of the East and peoples of the West, and to an even greater extent between the peoples of the East or West and those living along the Silk Road in Central Asia. This is reflected by the many loan words transmitted along the Silk Road from one end to the other, especially those connected with the textile trade.
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James A. Hamilton (1995) studied this question.