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why was silk important to china
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why was silk so important to china
why was the silk road so important to china
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why is the silk road of china important
why is silk so important to china
why was silk important to china, why was silk important in ancient china, why was the silk road important to china, why was silk so important to china, why was the silk road so important to china, why was silk chinas most important export, why is the silk road of china important, why is silk so important to china
