Two superpowers after WWII: USA (capitalist) and Soviet Union (communist)
Main cause of Cold War: Conflict between capitalism (private business) and communism (government controls everything)
Called Cold War because they didn’t fight each other directly — instead they had proxy wars (Korea, Vietnam, Afghanistan)
NATO (1949): U.S. + Western Europe formed a military alliance to stop communism
Still exists today
Russia doesn’t like NATO expansion near its borders (e.g. Ukraine — big reason for invasion)
Both sides built thousands of nukes (but never used them)
Sputnik (1957): Soviets launched 1st satellite
Eventually, nukes were reduced — but still enough to destroy the world multiple times
Communism: Gov owns everything — meant to create equality, but leads to low motivation and weak economy
Capitalism: People own businesses — creates inequality but motivates people to work hard
Mikhail Gorbachev (1985) introduced:
Perestroika = Some capitalism
Glasnost = More free speech
It wasn’t enough — Soviet economy collapsed
1989: Eastern European countries left Soviet control (Poland, Hungary, etc.)
1991: Soviet Union officially ends
Chinese Civil War (1945–1949):
Communists (Mao Zedong) beat Nationalists (Chiang Kai-shek)
Mao’s rule:
Great Leap Forward (1958–61): Collectivized farming → massive famine → 15–45 million died
Cultural Revolution (1966–76): Targeted "enemies" of communism → chaos, deaths, violence
Pro-women reforms: Mao pushed for gender equality
After Mao: Deng Xiaoping allowed capitalism → led to China’s economic rise
North Vietnam (Ho Chi Minh, communist) vs. South Vietnam (U.S.-backed, capitalist)
Another proxy war like Korea
Ho Chi Minh gained support from peasants (like Mao and Gandhi)
Marshall Plan: U.S. gave money to rebuild Western Europe after WWII
Truman Doctrine: U.S. would help countries fight communism (started with Greece & Turkey)
Prague Spring (1968): Czech tried to reform, but Soviets crushed it
Helsinki Accords (1975): Tried to ease Cold War tensions (détente)
After WWII, most African & Asian colonies got independence
Many migrated to former colonizers' cities (e.g., Indians to London)
Borders in Africa (from Berlin Conference) caused ethnic conflicts after independence
Algeria: France didn’t want to let go → war for independence → Algeria free in 1962
1947: India got independence → Split into:
India (mostly Hindu)
Pakistan (mostly Muslim)
Led to violence and death of millions
East Pakistan later became Bangladesh
India & Pakistan still hate each other and both have nuclear weapons
Iran (1979): Islamic Revolution → religious leaders (Ayatollah) take over
Taliban in Afghanistan (1996–2001, 2021–): Strict Islamic law, sheltered Osama bin Laden → U.S. invaded after 9/11
South Africa had apartheid (racial segregation) until 1994
Nelson Mandela became 1st Black president after being in jail
Stalin (USSR): Collectivized farms → famine in Ukraine (1930s)
Pol Pot (Cambodia): Killed 2 million+ people, forced people into farms (Khmer Rouge)
1950s: Jets invented → faster travel → more global contact
Cars + planes → more fossil fuel use → climate change
Debate began in 1990s as China & India industrialized
Gamal Abdel Nasser (Egypt): Took control of Suez Canal from British
Nationalist Movements: Led by educated elites in Africa, Asia, Middle East