When American troops entered the Vietnam War, many Americans​

Fighting resumed and South Vietnam eventually surrendered to the forces of North Vietnam in April 1975. Approximately 2,700,000 American men and women served in Vietnam. It was the first war in which the US failed to meet its objectives. It was also the first time America failed to welcome its veterans back as heroes.

Explanation:

that would be the steamboat because none of the other things are forms of transportation

i believe that the correct answer is a canadian hero.

explanation: he is celebrated as a national hero in canada for successfully thwarting a united states takeover of canada during the war of 1812.