How did the vietnam war affect the u. s. ?

it damaged the U.S. Economy (US spent $168 million into the war)

it created some policy changes (Congress ended the military draft and replaced it with all-volunteer and reduced the voting age to 18)

People mistrust the government and its officials

it caused the "Vietnam Syndrome" (American leaders were afraid of getting stuck in another Vietnam if they send American troops overseas to help another country)

***hope that helped***

Explanation:

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.