What was not a legacy of the Vietnam War? Patriotism grew because the United States persevered in a difficult war.

Vietnam became a single communist country.

The United States lost world respect for aggression against a small nation.

American citizens continued to distrust government actions in the United States.

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )