The Soviet Union held its first successful atomic test on August 29, 1949. What
impact did this have on the United States? (2 points)
1) It fed the American public's fears about the dangers of communism.
2) It spurred Congress to increase Marshall Plan aid to Western Europe.
3) It prompted the formation of the North Atlantic Treaty Organization.
4) It convinced the Truman administration to pursue a policy of containment.