Unit 8 Mid-Unit Study Guide Cold War & Decolonization (c. 1945–1975)

🔑 BIG IDEA

After World War II, global power shifted from European empires to two superpowers: the United States and the Soviet Union.

Their ideological rivalry—capitalism vs communism—created the Cold War, which shaped global politics through alliances, nuclear weapons, and proxy wars.

At the same time, decolonization created more than 60 new nations, many of which sought to remain neutral.

🌍 8.1 – The World After World War II

After World War II, global power shifted away from European empires and toward two superpowers: the United States and the Soviet Union. Their rivalry created the Cold War, a global conflict between capitalism and communism. At the same time, decolonization movements created dozens of new independent nations, many of which tried to avoid choosing sides in the Cold War.

World War II weakened the traditional imperial powers of Europe. Countries such as Britain and France struggled economically and faced increasing resistance from nationalist movements in their colonies. As empires declined, new independent states emerged across Asia and Africa. Meanwhile, the United States and the Soviet Union became the dominant global powers, creating a bipolar world system.

Key Ideas, People, and Events

• Decolonization – The process in which colonies gained independence from European empires after World War II.

• Self-Determination – The idea that people should have the right to govern themselves without foreign control.

• United States – Emerged from WWII with a powerful economy and strong global influence.

• Soviet Union – Expanded its power by controlling Eastern Europe and promoting communism.

• India (1947) – One of the most important early examples of independence after WWII.

• Ghana (1957) – First sub-Saharan African colony to gain independence from European rule.

8.2 – Cold War Ideological Rivalry

The Cold War was a global struggle between two competing political and economic systems. The United States promoted capitalism and democracy, while the Soviet Union promoted communism and centralized economic control. Many newly independent nations did not want to align with either side and instead tried to remain neutral.

Key Ideas, People, and Events

• Cold War – Political and ideological rivalry between the United States and the Soviet Union from about 1947 to 1991.

• Capitalism – Economic system based on private ownership and free markets.

• Communism – Economic and political system where the state controls production and property is owned collectively.

• Non-Aligned Movement (NAM) – Group of countries that tried to remain independent from both Cold War superpowers.

• Bandung Conference (1955) – Meeting of Asian and African nations that promoted cooperation and non-alignment.

• Jawaharlal Nehru – Leader of India who supported non-alignment.

• Gamal Abdel Nasser – Egyptian leader who promoted Arab nationalism and independence from superpower influence.

8.3 – Effects of the Cold War

Although the United States and the Soviet Union rarely fought directly, their rivalry reshaped global politics. The Cold War produced military alliances, nuclear weapons competition, and proxy wars around the world.

Key Ideas, People, and Events

• NATO (1949) – Western military alliance led by the United States.

• Warsaw Pact (1955) – Communist military alliance led by the Soviet Union.

• Nuclear Arms Race – Competition between superpowers to build larger nuclear arsenals.

• Mutually Assured Destruction (MAD) – The idea that nuclear war would destroy both sides completely.

• Proxy Wars – Conflicts in which superpowers supported opposing sides without directly fighting each other.

• Korean War (1950–1953) – Early Cold War proxy war between communist North Korea and capitalist South Korea.

8.4 – Spread of Communism

Communism spread in several regions during the mid-20th century, often through revolutions and promises of land reform. These movements were especially powerful in countries where peasants faced severe inequality.

Key Ideas, People, and Events

• Chinese Communist Revolution (1949) – Mao Zedong and the Chinese Communist Party defeated the Nationalists and created the People’s Republic of China.

• Long March (1934–1935) – CCP retreat that strengthened Mao’s leadership and built support among peasants.

• Great Leap Forward (1958–1962) – Mao’s attempt to rapidly industrialize China through communes; resulted in a famine that killed 15–45 million people.

• Ho Chi Minh – Communist leader of Vietnam who fought for independence from France.

• Battle of Dien Bien Phu (1954) – Vietnamese communist victory that ended French colonial rule in Vietnam.

• Cuban Revolution (1959) – Fidel Castro established a socialist government and redistributed land.

🧠 What You Should Be Able to Explain

For your quiz and the AP exam, make sure you can explain:

• Why did European empires collapse after WWII

• How the Cold War rivalry divided the world

• The purpose of alliances like NATO and the Warsaw Pact

• How proxy wars spread the Cold War conflict globally

• Why communist revolutions succeeded in places like China and Vietnam