which made it possible for mongol armies to conquer Chinese wall cities
A. mongol archers on horseback
B. cannons and other new weapons
C. mongol spies and siege engines
D. famine and civil war inside china
It's B. Cannons and other new weapons. Cannons would blow up a section of the wall to make an easy raid. If you need more help just ask :) yous is so welcomes
