Which is not a characteristic of a “unitary system”? a. the central government and the local governments are united and have equal powers. b. the national government is supreme. c. it is one in which power is concentrated in a central government d. it grants or retains powers to and from local governments at its whim.

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.

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