c. 1900 – present | Exam Weight: 8–10%
🌐 Unit Overview
Since 1900 — and especially since 1991 — the world has been more deeply interconnected than ever
before. New technologies (computers, the internet, mobile phones, airliners, containerized
shipping) have collapsed distances. International institutions (UN, WHO, WTO, IMF, EU) have tried
to govern shared problems. Global popular culture, from Hollywood to K-pop, crosses borders with
unprecedented speed. But globalization has also produced backlash:
environmental crises, pandemics, inequality, religious and nationalist movements, migration
conflicts, and resistance to Western cultural dominance.
Big question: How have technological, economic, cultural, and environmental
globalization since 1900 reshaped human life — and what resistance has that change provoked?
1903: Wright brothers' first powered flight.
1918–19: Global influenza pandemic kills 50–100 million.
1928: Penicillin discovered (Fleming); widely used by the 1940s.
1940s–60s: Green Revolution sharply raises crop yields (Borlaug).
1945: Atomic bombs; UN and Bretton Woods institutions founded.
1948: WHO and Universal Declaration of Human Rights.
1957: Sputnik; space age begins.
1962: Rachel Carson's Silent Spring.
1969: Apollo 11 lands on the moon; ARPANET prototype.
1973 & 1979: OPEC oil shocks reshape global economy.
1980: WHO declares smallpox eradicated.
1981: AIDS first clinically identified; global epidemic follows.
1989–91: Fall of Soviet bloc; World Wide Web proposed (Berners-Lee, 1989).
1992: Rio Earth Summit; Maastricht Treaty creates the European Union.
1994: NAFTA takes effect; Rwanda genocide; Mandela elected in South Africa.
1995: WTO replaces GATT.
2001: 9/11 attacks; U.S. "War on Terror" begins.
2008: Global financial crisis.
2011: Arab Spring uprisings.
2020: COVID-19 pandemic reshapes work, travel, and politics worldwide.
GlobalizationGrowing interconnection of economies, cultures, and populations.
ContainerizationStandardized steel containers that cut shipping costs dramatically.
Green RevolutionMid-20th-century rise in yields from new seeds, fertilizers, and irrigation.
World Wide WebTim Berners-Lee's 1989 hypertext system; foundation of the modern internet.
SmartphoneHandheld internet-connected phone (mass adopted after iPhone 2007).
Social mediaUser-generated online networks (Facebook, Twitter/X, WeChat, TikTok).
1918 FluPost-WWI pandemic that killed 50–100 million worldwide.
PenicillinFirst widely used antibiotic (Fleming 1928; mass-produced 1940s).
Smallpox eradicationWHO-led program that eliminated smallpox (declared 1980).
HIV/AIDSLate-20th-century pandemic, especially devastating in sub-Saharan Africa.
COVID-19Coronavirus pandemic beginning in 2019–20; reshaped global life.
AnthropoceneProposed geological epoch defined by human impact on Earth.
Climate changeLong-term warming of Earth's climate driven by greenhouse gases.
Silent SpringRachel Carson's 1962 book; catalyst for environmentalism.
Montreal Protocol1987 treaty that phased down ozone-depleting chemicals.
Kyoto Protocol1997 treaty committing industrial states to emissions cuts.
Paris Agreement2015 global climate agreement with voluntary national targets.
NeoliberalismFree-market, deregulation, privatization approach dominant since 1980s.
WTOWorld Trade Organization (1995), regulating global trade rules.
NAFTA1994 North American trade agreement (replaced by USMCA, 2020).
European UnionEconomic and political union formalized in 1993; 27 states today.
Multinational corporation (MNC)Firm operating in multiple countries (Shell, Apple, Toyota).
OffshoringRelocating production to lower-wage countries.
Structural adjustmentIMF/World Bank conditions (privatization, austerity) on loans.
2008 financial crisisGlobal recession triggered by U.S. housing/banking collapse.
BRICSBrazil, Russia, India, China, South Africa bloc of rising economies.
Universal Declaration of Human Rights1948 UN document codifying universal rights.
NGONon-governmental organization (e.g., Amnesty International).
Black Lives MatterGlobal movement (from 2013) against police violence and systemic racism.
#MeTooViral 2017 movement against sexual harassment and assault.
HollywoodU.S. film industry exporting global mass culture.
BollywoodMumbai-based Hindi film industry, the world's most prolific.
K-popKorean pop music, a leading global cultural export in the 2010s–20s.
McDonaldizationSociological term for standardization of global consumer experience.
Islamic revivalLate-20th-century resurgence of political Islam.
9/112001 al-Qaeda attacks on the U.S.; triggered War on Terror.
Arab Spring2011 wave of uprisings across the Arab world.
BrexitUK's withdrawal from the European Union (vote 2016; exit 2020).
PopulismPolitics pitting "the people" against "elites" — left and right forms.
📝 Multiple Choice Practice
Three questions per sub-topic (27 total). Click an answer to check it.
Topic 9.1 — Technology & Exchange
1. Which of the following MOST dramatically reduced global shipping costs after 1950?
(A) The invention of the airplane.
(B) Containerization — standardized steel containers and purpose-built ships and ports.
(C) The Erie Canal.
(D) The steam engine.
Answer: B. Containerization (from the late 1950s) is often credited with cutting shipping costs roughly 90%.
2. The Green Revolution of the 1940s–60s is BEST described as
(A) An environmentalist protest movement.
(B) The spread of high-yield seeds, synthetic fertilizers, pesticides, and irrigation that sharply increased food production in parts of the Global South.
(C) A movement against the use of fossil fuels.
(D) A series of wars over farmland.
Answer: B. Borlaug's work in Mexico, India, and the Philippines helped avert predicted famines.
3. The World Wide Web (1989) mattered for globalization because it
(A) Was used only by militaries.
(B) Created a mass public platform for sharing information across borders, enabling e-commerce, digital media, and instant global communication.
(C) Ended television.
(D) Replaced automobiles.
Answer: B. The Web is a foundation of late-20th- and 21st-century globalization.
Topic 9.2 — Disease
4. The 1918 influenza pandemic is significant to world history because
(A) It was limited to one continent.
(B) Its scale (50–100 million dead), spread along WWI military networks, and impact on public health made it one of the deadliest events of the 20th century.
(C) It ended WWI.
(D) It only killed the elderly.
Answer: B. The pandemic showed how modern transportation networks spread disease globally.
5. The WHO declared smallpox eradicated in 1980, which illustrates
(A) That all diseases have been eradicated.
(B) The potential of coordinated international public-health campaigns using vaccination to eliminate a human disease.
(C) That vaccines do not work.
(D) That smallpox was never dangerous.
Answer: B. Smallpox remains the only infectious human disease fully eradicated.
6. Which of the following is an example of the "limits of modern medicine"?
(A) Polio vaccine.
(B) The rise of antibiotic-resistant bacteria ("superbugs") and unequal global access to medicines.
(C) Eradication of smallpox.
(D) Longer life expectancy.
Answer: B. Resistance and unequal access illustrate how technology alone cannot solve all health challenges.
Topic 9.3 — Environment
7. Rachel Carson's Silent Spring (1962) was significant because it
(A) Promoted pesticide use.
(B) Alerted a broad public to the ecological dangers of synthetic pesticides (DDT) and helped launch the modern environmental movement.
(C) Denied climate change.
(D) Celebrated industrial agriculture.
Answer: B. Silent Spring galvanized environmentalism and contributed to the DDT ban.
8. Which of the following is the BEST example of successful international environmental cooperation?
(A) The Treaty of Versailles.
(B) The Montreal Protocol (1987), which phased down ozone-depleting chemicals and measurably repaired the ozone layer.
(C) The Cuban Missile Crisis.
(D) The Marshall Plan.
Answer: B. Montreal is often cited as the most effective environmental treaty to date.
9. Which statement BEST describes global climate change by the 21st century?
(A) It is driven entirely by natural causes.
(B) Scientific consensus links it to greenhouse gas emissions since the Industrial Revolution, with unequal impacts that fall heaviest on poorer, low-lying regions.
(C) It is only a theoretical problem with no measured effects.
(D) It affects only European countries.
Answer: B. Climate change also raises debates about "common but differentiated responsibilities" between rich and poor countries.
Topic 9.4 — Economics
10. Neoliberal policies of the 1980s–90s emphasized
(A) Expansion of government ownership of industry.
(B) Privatization, deregulation, lower tariffs, and reduced public spending.
(C) Revival of feudalism.
(D) Adoption of central planning.
Answer: B. Thatcher, Reagan, and allied policymakers led this shift; it also shaped IMF structural adjustment programs.
11. China's post-1978 economic transformation under Deng Xiaoping is BEST described as
(A) A return to Maoist collectivization.
(B) Market-oriented reforms (special economic zones, foreign investment, export-led growth) combined with continued one-party rule.
(C) Full democratization.
(D) Isolation from world trade.
Answer: B. China became the world's factory and, by the 2010s, its second-largest economy.
12. The 2008 global financial crisis
(A) Was limited to the U.S.
(B) Originated in the U.S. housing and banking sectors but spread worldwide through interconnected financial markets, causing recession and political backlash in many countries.
(C) Was caused by the oil shocks.
(D) Only affected China.
Answer: B. The crisis illustrated how financial globalization can transmit shocks worldwide.
Topic 9.5 — Reform
13. The Universal Declaration of Human Rights (1948) is significant because it
(A) Was legally binding on all states.
(B) Provided a universal vocabulary of rights that later generations of activists have invoked to challenge injustice worldwide.
(C) Established communism globally.
(D) Ended all wars.
Answer: B. The Declaration is a foundational text of the modern human-rights regime.
14. The global spread of women's rights in the 20th century included all of the following EXCEPT
(A) Women's suffrage in additional countries.
(B) International UN women's conferences.
(C) Growing women's participation in formal paid work.
(D) Global abolition of all legal gender inequality.
Answer: D. Legal and practical gender inequalities remain widespread even where formal rights have expanded.
15. The 21st-century Black Lives Matter movement illustrates
(A) The irrelevance of race to modern politics.
(B) How local protest can spread globally via social media, linking racial justice issues in the U.S. to similar struggles elsewhere.
(C) The end of civil rights activism.
(D) The closure of the internet.
Answer: B. BLM protests emerged globally after 2013 and especially in 2020, showing 21st-century networked activism.
Topic 9.6 — Globalized Culture
16. "McDonaldization" refers to
(A) The decline of restaurants.
(B) The sociologist George Ritzer's term for the spread of standardization, efficiency, and predictability in global consumer culture.
(C) A 1990s protectionist policy.
(D) A Soviet command-economy term.
Answer: B. McDonaldization is shorthand for a critique of global consumer homogenization.
17. The rise of K-pop, Bollywood, and Nollywood illustrates
(A) U.S. cultural dominance without competition.
(B) That globalization does not only flow from the West — non-Western cultural industries also export worldwide.
(C) The end of local cultures.
(D) That cinema is no longer popular.
Answer: B. These industries illustrate multidirectional cultural globalization and hybridity.
18. Social media has had which of the following dual effects on global politics in the 21st century?
(A) Only negative effects.
(B) Enabled grassroots mobilization (e.g., Arab Spring, #MeToo, BLM) while also facilitating disinformation, polarization, and state surveillance.
(C) Only democratizing effects.
(D) No effect on politics.
Answer: B. Social media is a double-edged technology in political life.
Topic 9.7 — Resistance
19. The 1999 Seattle WTO protests are BEST understood as
(A) A pro-free-trade rally.
(B) A wave of anti-globalization protest bringing together labor, environmentalists, and social-justice activists against the WTO's trade agenda.
(C) A celebration of NAFTA.
(D) A Cold War event.
Answer: B. Seattle became a symbol of organized resistance to globalization.
20. Which of the following is an example of 21st-century populist backlash against globalization?
(A) The founding of the WTO.
(B) Brexit (UK's 2016 vote to leave the EU) and the rise of tariff- and immigration-focused politics in the U.S. and Europe.
(C) The Marshall Plan.
(D) The Bandung Conference.
Answer: B. Right-populist movements reject aspects of open trade, migration, and supranational governance.
21. Al-Qaeda's 9/11 attacks on the United States can be interpreted as
(A) Support for globalization.
(B) A violent form of transnational extremist resistance to U.S. global power and Westernization, using globalized media and networks for propaganda.
(C) A Cold War proxy war.
(D) An attack by a state army.
Answer: B. 9/11 catalyzed the "War on Terror" and reshaped U.S. foreign policy for two decades.
Topic 9.8 — Institutions
22. The UN Security Council's veto power has been criticized because it
(A) Gave too much power to small states.
(B) Allows any of the five permanent members (U.S., UK, France, Russia, China) to block collective action, reflecting 1945 power balances and paralyzing responses to crises like Syria and Ukraine.
(C) Was abolished in 1991.
(D) Gives Europe ultimate authority.
Answer: B. P5 veto is a major target of UN reform proposals.
23. The European Union is BEST described as
(A) A purely military alliance.
(B) An unprecedented supranational political and economic union with a single market, common institutions, and (for many members) a shared currency.
(C) A branch of NATO.
(D) The successor to the Warsaw Pact.
Answer: B. The EU pools significant sovereignty in economic and regulatory affairs.
24. Which of the following BEST illustrates the role of NGOs in global affairs?
(A) The UN Security Council's permanent members.
(B) Amnesty International campaigning for political prisoners and Médecins Sans Frontières providing humanitarian aid in conflict zones.
(C) The U.S. Defense Department.
(D) OPEC's oil policy.
Answer: B. NGOs have become major actors in rights, humanitarian aid, environment, and development.
Topic 9.9 — Continuity & Change
25. Which of the following is a long-term CONTINUITY across the whole AP World course (c. 1200–present)?
(A) Fully equal global wealth distribution.
(B) The persistence of long-distance trade networks moving people, goods, ideas, and disease.
(C) Global absence of states.
(D) Identical technologies everywhere.
Answer: B. From the Silk Roads to container ships to the internet, cross-regional exchange is a deep continuity.
26. Which is a major CHANGE distinguishing the post-1900 world from the 19th century?
(A) A return to formal European empires.
(B) The decline of formal empires and the near-universal spread of sovereign nation-states, along with a global human-rights framework.
(C) The disappearance of trade.
(D) An absence of nationalism.
Answer: B. Decolonization and human-rights discourse are defining 20th-century changes.
27. Which of the following BEST characterizes the early 21st-century world order?
(A) A stable bipolar Cold War.
(B) A shifting order with multiple poles (U.S., China, EU, regional powers), deep globalization, rising populist backlash, and new transnational challenges like climate change and pandemics.
(C) A fully unified world government.
(D) A return to medieval feudalism.
Answer: B. The post-Cold War "unipolar moment" has given way to more complex, multipolar, and contested politics.