The people in Tang Dynasty were involved in commercial activities due to developed and improved agriculture and the handicraft industry. These paved way to both domestic and international trade with other countries, for example with India. Common trade goods include salt, foodstuffs, spirits, tea, medicine, gold, silver, and textiles. Cities were established wherever trading was strong, which then provided ready market for goods produced from the farms and handcraft sector. The development of the Silk Road led into marine trade also. Tang ships traded as far as the Persian Gulf.