Which situation is an example of a person using technology initially designed for the military A. a teenager pumps gasoline into a new car B. a man uses a credit card to pay for new purchases C. a pediatrician vaccinates against polio D. a woman uses a Global Positioning System to navigate around town

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.

my cultural heritage consists of irish, german, native american, and others.

definitely a for sure. ill see and update if i get the answer