Wich of the following would be one of jimmy carter's greatest achievements in foreign policy?

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast

accomplishment : zachary taylor’s was a national war hero in his battle in an mexican war

explanation:

he was known as a national war hero for his battles in the mexican war, taylor was elected as the 12th president of the united states in 1849. he led the nation during its debates on slavery and southern secession. after serving only 16 months in office, taylor died from cholera morbus on july 9,