The Americans had a clear advantage fighting on their own soil during the American Revolution. Choose ALL examples of ways the Americans used geography to their advantage during this war.

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.

i believe it was spain