Answer:A
Explanation:i did this and got 100 on my test garanteed
Truman was the one who adopted a policy of containment. This (arguably) aggressive approach was what influenced America to get into wars such as the Korean War and other smaller conflicts. Meanwhile, Eisenhower was a bit less aggressive. Although his Secretary of State Dulles preached Brinksmanship and was very anti-Soviet, Eisenhower himself was somewhat against this, as shown when he did nothing to prevent the Hungarian Revolt. He also sought to increase U.S-Soviet Relations in the Spirit of Geneva, but the U-2 Incident pretty much erased most of his progress.
The Calhoun doctrine shows that Calhoun wanted states to have the right to nullify national laws
The area was part of the Louisiana purchase
People think that it is a war that we should have not fought because we didn’t win, many soldiers were killed, and south Vietnam’s became communist after the 20 year war.