On the local level, who runs the public schools?
a. the principal
b. the teachers and the staff
c. the state superintendent
d. an elected school board

answer: what is the question?

explanation:

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.