14.2 The Spread of Communism

The Rise of Communism in China and its Spread to Korea and Vietnam

Chinese Communist Party's Rise to Power

The Chinese Civil War (1927–1949) was one of the longest and most consequential conflicts of the 20th century. It pitted the Nationalist Party (Kuomintang), led by Chiang Kai-shek, against the Communist Party, led by Mao Zedong. The Communists built their base among China's massive rural population by promising land reform and using guerrilla warfare tactics that kept them mobile and hard to defeat.

• The Long March (1934–1935): When Nationalist forces nearly destroyed the Communist army, roughly 100,000 Communist troops began a 6,000-mile retreat across China's interior. Only about 8,000 survived, but the march became a powerful symbol of Communist determination and helped Mao consolidate leadership of the party.
• The Second United Front (1937–1945): During World War II, the Nationalists and Communists temporarily allied against Japan's invasion. This pause in the civil war gave the Communists time to expand their influence in rural areas and build up their forces.
• Resumption of the Civil War (1945–1949): After Japan's defeat, fighting resumed. The Communists continued winning peasant support through land redistribution, while the Nationalist government suffered from widespread corruption, runaway inflation, and declining U.S. aid. The Communists' guerrilla tactics and popular support proved decisive.

On October 1, 1949, Mao Zedong proclaimed the People's Republic of China in Beijing. The Nationalists fled to the island of Taiwan, where they established a rival government. This Communist victory alarmed the United States and its allies, as the world's most populous country had now joined the Soviet Union in the communist bloc.

Korean War

After Japan's surrender in 1945, Korea was divided along the 38th parallel. The Soviet Union occupied the north and installed a communist government, the Democratic People's Republic of Korea (North Korea), under Kim Il-sung. The United States backed the Republic of Korea (South Korea) in the south under Syngman Rhee.

Outbreak and key events:

1. North Korean invasion (June 25, 1950): North Korean forces, equipped with Soviet weapons and backed by China, crossed the 38th parallel and quickly pushed South Korean forces to a small perimeter around the port city of Pusan.
2. Inchon Landing (September 1950): U.S.-led U.N. forces, commanded by General Douglas MacArthur, launched a surprise amphibious assault at Inchon, far behind North Korean lines. This turned the war around and allowed U.N. forces to push north toward the Chinese border.
3. Chinese intervention (October 1950): Alarmed by U.N. forces approaching its border, China sent roughly 300,000 troops into Korea, driving U.N. forces back south of the 38th parallel.
4. Stalemate and armistice (1951–1953): The front lines stabilized near the 38th parallel. Peace talks dragged on for two years while fighting continued. The Korean Armistice Agreement, signed on July 27, 1953, ended active combat but did not produce a formal peace treaty.

Consequences:

• Korea remained divided, with a heavily fortified Demilitarized Zone (DMZ) separating North and South
• An estimated 2.5 million civilians and over 1.5 million soldiers died
• The war solidified the U.S.-South Korea military alliance, which persists today
• Cold War tensions intensified as both superpowers saw the conflict as a test of their global influence

U.S. Involvement in Vietnam War

Vietnam's path to war began under French colonial rule. The Viet Minh, a communist and nationalist movement led by Ho Chi Minh, fought France for independence in the First Indochina War (1946–1954). The U.S. funded much of France's war effort to prevent communist expansion in Southeast Asia, but France was defeated at the Battle of Dien Bien Phu in 1954.

Division and escalation:

• The Geneva Accords (1954) divided Vietnam at the 17th parallel into communist North Vietnam and U.S.-backed South Vietnam. Nationwide elections were supposed to reunify the country, but they never took place because the U.S. and South Vietnam feared Ho Chi Minh would win.
• The Viet Cong formed as a communist guerrilla force in South Vietnam, fighting to overthrow the southern government and reunify the country under communist rule.
• The Domino Theory drove U.S. policy: American leaders believed that if Vietnam fell to communism, neighboring countries like Laos, Cambodia, and Thailand would follow.

Key turning points:

1. Gulf of Tonkin Incident (August 1964): Alleged North Vietnamese attacks on U.S. naval ships led Congress to pass the Gulf of Tonkin Resolution, giving President Lyndon B. Johnson broad authority to escalate military involvement. The details of the incident remain disputed by historians.
2. Operation Rolling Thunder (1965–1968): A sustained bombing campaign against North Vietnam intended to weaken its war effort. The U.S. dropped more bombs on Vietnam than on all of Europe during World War II, yet North Vietnam continued fighting.
3. Troop escalation: U.S. military personnel in Vietnam grew from 23,000 in 1964 to over 500,000 by 1968.
4. Tet Offensive (January 1968): North Vietnamese and Viet Cong forces launched coordinated surprise attacks on over 100 South Vietnamese cities and military bases, including the U.S. embassy in Saigon. Though a military failure for the communists, the offensive shattered American public confidence that the war was being won and turned U.S. opinion sharply against continued involvement.