Which of the Following Accurately Describes Commerce in Song Ports

Multiple Choice

Which of the following accurately describes commerce in Song ports?

A) State officials registered,examined,and taxed cargo on ships.
B) No foreigners were allowed,and all trade had to be conducted on Chinese ships with Chinese crews.
C) The governor was occupied with matters related to maintaining the city walls and left control of the ports to merchants.
D) Buddhist monasteries took control of trading to ensure fair practices.