Which of these four events demonstrate the impact of the United States-Soviet Union tension on global politics during the 1950s and 1960s? (Select 4 correct answer(s))
a. U.S. boycott of the U.N. Security Council
b. Arms race between the U.S. and USSR
c. Creation of NATO and Warsaw Pact alliances
d. The Cuban Missile Crisis
e. Military conflicts in Korea and Vietnam