Which product was commonly traded along the silk road? a. rubber b. spice c. wool d. timber

b. spice 

 The product that was commonly traded along the Silk Road were spices. Spices were produced in countries far away from Europe and they were very expensive, both because the production was limited and because the trip to collect them was dangerous. The Silk Road linked Asia and Europe via land for many centuries before the age of Discoveries.