1. The Cold War Heats Up

2. NATO Why create a treaty organization? Soviet vetoes prevented the United Nations from resolving a number of postwar problems. The United States sought to avoid the problems of post–World War I isolationism. The United States did not want to be the only nation in the Western Hemisphere committed to fighting communism. A Canadian role in the treaty organization would be vital.

3. What was NATO? The North Atlantic Treaty Organization (NATO) was formed in April 1949. In joining NATO, the United States, Canada, and ten Western European nations pledged to support one another against attack, a principle known as collective security. In response, the Soviet Union created the Warsaw Pact, a military alliance between the Soviet Union and its satellite nations.

4. The Soviet Atomic Threat In September 1949, Truman announced that the Soviet Union had successfully tested an atomic bomb. In response, the United States began developing the even more powerful hydrogen bomb, reestablishing itself as the world’s leading nuclear power. The newly formed Federal Civil Defense Administration distributed information on how to survive a nuclear attack; this information was ridiculed by experts.

5. The Cold War at Home During the late 1940s, fear of Communist spies created a climate of suspicion in the United States. Truman established a federal employee loyalty program in 1947, checking the backgrounds of all new and existing federal employees. The House Un-American Activities Committee (HUAC) began investigating Hollywood personalities who the committee claimed, had Communist leanings. When one group, known as the Hollywood Ten, refused to answer HUAC’s questions, they were cited for contempt of Congress and imprisoned. Hollywood studios compiled a blacklist, a list circulated to employers naming persons who should not be hired. Blacklisted individuals came from all sections of the industry and included anyone who seemed subversive.

6. The Cold War at Home Fueled by fears of disloyal immigrants from Communist countries, the 1952 McCarran-Walter Act reestablished the immigration quota system from 1924. This act discriminated against potential immigrants from Asia and Southern and Central Europe. Two famous spy cases reinforced fears that Soviet spies in the United States were sharing American secrets with foreign Communists. These were the cases of Alger Hiss and of Julius and Ethel Rosenberg.

7. China Falls to the Communists During World War II, competing factions in China had cooperated, but fighting between them resumed towards the end of the war. At first, the United States supported Nationalist leader Jiang Jieshi against Communist Mao Zedong. However, the United States later decided to focus on Western Europe instead. Many Americans viewed Mao Zedong’s creation of a Communist state in China as a failure of Truman’s policies.

8. The Chinese Civil War Civil war began in the mid-1920s and intensified after World War II. Mao Zedong won support for the Communists by redistributing land and offering schooling and healthcare. Jiang Jieshi’s Nationalist Party lost support because of harsh treatment of the population, high taxes, and corruption. When the Communists took power in 1949, the Nationalists fled to Taiwan.

9. The Division of Korea World War II ended before a plan could be made for Korean independence from Japan. Korea was temporarily divided at the thirty- eighth parallel, the latitude line running through approximately the midpoint of the peninsula. A pro-American government formed in South Korea, while a Communist government formed in North Korea.

10. The Korean Conflict In June 1950, the Korean War broke out when North Korean troops invaded South Korea, aiming to reunite the nation by force. A UN resolution, which passed because the Soviets were not there to veto it, called on member states to defend South Korea and restore peace. Roughly 80 percent of the troops who served in the resulting UN police action were American. By attacking North Korean supply lines, General Douglas MacArthur was able to gain an advantage and push north. However, a stalemate developed after China helped the North Koreans push the UN forces back into South Korea. A truce signed in 1953 left Korea again divided near the thirty eighth parallel.

11. Post-Korean War Changes in America Warfare — Limited war, limited victory Integration of the Military — First war in which white Americans and African Americans served in the same units Increased Power of the Military — A military-industrial complex developed as the military established links with the corporate and scientific communities. Foreign Policy in Asia — September 1951 peace treaty signed with Japan; relations worsen with Communist China

12. The McCarthy Era McCarthy’s Rise to Power Wisconsin Senator Joseph McCarthy, up for reelection raised the specter of Communist conspiracies within the United States. McCarthy produced a list of 250 names of presumed Communist-supporting government employees. Later, when scrutinized, this list was reduced to 57. Although McCarthy’s accusations were usually baseless and unprovable, few were willing to risk their reputations by speaking out against him.

13. McCarthy’s Fall In early 1954, McCarthyism, the name given to McCarthy’s crusade, reached the army. Democrats asked that the hearings between McCarthy and the army be televised, hoping to swing popular opinion against McCarthy. By mid-June 1954, McCarthy had lost even his strongest supporters. The Senate formally condemned him for his actions

14. United States involvement around the world, 1947–1956 Eastern Europe — Wary of war with the Soviets, America did not support uprisings in East Germany, Poland, and Hungary. Southeast Asia — Korean War ends; former French colony of Vietnam is divided into Communist North and anti-Communist South. Middle East — United States supports Israel, backs groups that restore a pro-American Shah in Iran; the Suez Crisis in Egypt erupts. Latin America — Organization of American States (OAS) is created; American aid helps anti-Communist leaders gain and retain power.

15. The Arms Race Throughout the 1950s, the United States and the Soviet Union competed in an arms race, a struggle to gain weapons superiority. Deterrence, the policy of maintaining a military arsenal so strong that no enemy will attack for fear of retaliation, resulted in the escalating development of powerful nuclear weapons. The American policy of brinkmanship involved bringing the United States to the brink of war without actually entering into war.

16. The Arms Race in the Skies To carry bombs to their targets, the Soviet Union developed long-range rockets known as intercontinental ballistic missiles, or ICBMs. In 1957, one of these rockets was used to launch the Soviet satellite Sputnik, the first artificial satellite to orbit Earth. When a Soviet guided missile shot down an American U- 2 spy plane, the resulting U-2 incident shattered American confidence and prompted a desire to match— and surpass—Soviet weapons technology.