Which of the Following Was a Way in Which the Mongols

Which of the following was a way in which the Mongols contributed to the globalization of the Eurasian world?

A) In providing a secure environment for traders,they facilitated long-distance international commerce.
B) Their immunity to several deadly diseases allowed them to maintain long-distance trade routes.
C) Their promotion of Islam as the only true faith in the empire gave the whole empire a shared culture.
D) The Mongol conquest of Japan linked the extreme ends of the Eurasian trade networks for the first time.