B. New trade routes centering on Mesoamerica and the Andes developed.
C. The growth of interregional trade in luxury goods was encouraged by significant innovations in previously existing transportation and commercial technologies, including more sophisticated caravan organizations; use of the compass, astrolabe, and larger ship designs in sea travel; and new forms of credit and monetization.
D. Commercial growth was also facilitated by state practices, trading organizations, and state-sponsored commercial infrastructures.
China sent out enormous fleets under Admiral Zheng He to enroll states in Chinese tribute system, but then emperors stopped sending them. China came to believe in the superiority of their culture and believed that if they desired something from abroad, others would bring it to them
In Europe, states competed and sent out explorers/conquistadors to trade and later conquer