Answer:
Kublai Khan promoted commercial, scientific, and cultural progress. He helped Silk Road merchants by defending the Mongol postal system, building infrastructure, financing trade caravans, and encouraging the circulation of paper banknotes.
Step-by-step explanation:
Kublai Khan promoted commercial, scientific, and cultural progress. He helped Silk Road merchants by defending the Mongol postal system, building infrastructure, financing trade caravans, and encouraging the circulation of paper banknotes.