Which statement describes the 1947 decision over control of Jerusalem

the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.

the answer is use of support  

d is the correct answer

~courtney

d) iowa i believe is the answer