APWH · Unit 9— c. 1900 — present —

The era we’re still inside.

Bretton Woods, the WTO, the internet, China’s rise, climate change, populism — the era we’re still inside.

What you need to know

After 1991, the U.S.-led liberal economic order spread: GATT became the WTO; NAFTA opened North America; China entered the WTO in 2001 and became the world’s manufacturing hub. The internet shrank distances; smartphones reshaped culture. The 2008 financial crisis exposed fragility; populism surged in the 2010s and 2020s. Climate change is the era’s defining ecological fact. We are the period we’re studying.

CED topics (7)

The unit, topic by topic.

Deeper Context

Beyond the AP rubric: the era behind Unit 9

The 1900–present stretch in this unit lives inside a much wider story. For long-form context — themes, primary sources, and the moments that didn’t make the CED — read the era page(s):

  • 9.1

    Advances in Technology and Exchange

    Transportation, communication, biotech.TEC · CDI

    What to study

    Late-20th-century technology accelerated everything. Container shipping (1956 onward) cut shipping costs ~95%, making global supply chains economical. Commercial jet aircraft (1958) shrank the world. The internet (commercialized 1990s) connected information instantly and globally; smartphones (2007 onward) put it in everyone’s pocket. Biotechnology revolutionized agriculture (Green Revolution, GMOs) and medicine (recombinant DNA, gene therapy, mRNA vaccines). Each advance compounded the others.

    Key termsContainer shipping · Internet · Smartphones · Green Revolution · Biotechnology
    Exam focusTech matters when paired with consequences. Container shipping enabled Chinese manufacturing dominance.
    Primary sourceTim Berners-Lee, Proposal for the World Wide Web, 1989 — World Wide Web Consortium (W3C)
    The document that invented the internet as a public communication system — primary evidence of how a single technological innovation transformed global exchange within a decade.
    Whose story is missing?

    “The imagination has become an organized field of social practices, a form of work… and a form of negotiation between sites of agency and globally defined fields of possibility. Ordinary people have begun to deploy their imaginations in the practice of their everyday lives.” — Arjun Appadurai, Modernity at Large: Cultural Dimensions of Globalization, 1996

    Appadurai (b. 1949), a Mumbai-born anthropologist at New York University, developed some of the most influential frameworks for understanding globalization’s cultural dimensions. He argued that globalization was not simply economic but involved flows of ideas, images, and identities across national borders—and that these flows were not one-directional from West to Rest. His work represents the Global South scholarly perspective on globalization that is typically missing from AP World’s coverage of technology and exchange. Read the source →

  • 9.2

    Technological Advances and Limitations: Disease

    Medicine, pandemics, public health.TEC · ENV · SOC

    What to study

    Antibiotics (penicillin, 1928 industrial production 1940s) and vaccination programs nearly eliminated some infectious diseases (smallpox eradicated 1980; polio nearly so). Public health—sanitation, clean water, child immunization—doubled life expectancy in the 20th century. But new pandemics emerged: HIV/AIDS (~40 million dead since the 1980s); COVID-19 (~7 million confirmed dead since 2020). Antibiotic resistance threatens to roll back gains. The medical revolution is real but incomplete and unequal.

    Key termsVaccination · Smallpox eradication · HIV/AIDS · COVID-19 · Antibiotic resistance
    Exam focusCite specific diseases and the public-health responses. Pair successes (smallpox) with limits (HIV, COVID).
    Primary sourceWorld Health Organization, Global Strategy for AIDS, 1987 — Fordham Internet History Sourcebooks
    The WHO’s first coordinated global response to HIV/AIDS — evidence of how modern disease required international institutions and exposed the limits of national responses to global health crises.
    Whose story is missing?

    “The idea that some lives matter less is the root of all that is wrong with the world. When the Global South has a pandemic, it is a regional crisis. When the same disease reaches Europe or North America, it becomes a global emergency.” — Dr. Paul Farmer, Pathologies of Power: Health, Human Rights, and the New War on the Poor, 2003

    Farmer (1959–2022) was an American physician and anthropologist who founded Partners in Health and spent decades providing medical care in Haiti, Rwanda, and other Global South countries. His book documented how health outcomes were determined not by biology or technology but by political economy: who gets treated, at what speed, with what resources, is a function of whose lives are considered worth saving. COVID-19 later demonstrated exactly the vaccine access inequality he had described. Read the source →

  • 9.3

    Technological Advances: Environment

    Climate change, energy transitions, ecological costs.ENV · TEC

    What to study

    Industrial-era CO₂ emissions have driven measurable global warming since the late 20th century. Effects: more extreme weather, sea-level rise, ecosystem disruption, climate refugees. Responses: international agreements (Kyoto 1997, Paris 2015), shifts to renewables (solar, wind), debates over nuclear power. The transition is uneven and contested—rich countries built their wealth on fossil fuels and now ask poorer countries to skip them. Climate change is the era’s defining environmental fact.

    Key termsClimate change · CO₂ emissions · Paris Agreement · Renewables · Climate justice
    Exam focusClimate questions appear on the FRQ. Cite specific agreements, technologies, and tensions.
    Primary sourceUnited Nations, Rio Declaration on Environment and Development, 1992 — United Nations
    The Rio Declaration’s 27 principles — the international community’s first binding commitment to sustainable development and the primary source of the modern environmental governance framework.
    Whose story is missing?

    “We are not drowning. We are fighting. And we deserve to do more than just survive—we deserve to thrive. But to do that we need the world to stop treating our islands as sacrifice zones for its carbon habit.” — Kathy Jetnil-Kijiner, Marshall Islands poet and climate activist, address to the United Nations Climate Summit, New York, September 23, 2014 (approximate)

    Jetnil-Kijiner (b. 1987) delivered a poem at the 2014 UN Climate Summit that went viral—a letter to her infant daughter promising to fight so the Marshall Islands would not sink beneath rising seas. The Marshall Islands produces less than 0.001% of global greenhouse gas emissions but faces complete disappearance within decades due to sea-level rise caused by the emissions of industrialized nations. Her voice represents the Pacific Island nations that are on the frontline of a crisis they did not cause. Read the source →

  • 9.4

    Economics in the Global Age

    Bretton Woods, free trade, China’s rise.ECN

    What to study

    The Bretton Woods system (1944) set up the IMF, World Bank, and dollar gold standard, organizing the postwar Western economy. The shift to free trade accelerated through GATT (1947) and the WTO (1995). Manufacturing migrated from rich-world unionized workers to low-wage countries (Mexico via NAFTA 1994; China after WTO accession 2001). China’s rise—from 4% of global GDP in 1990 to ~18% in 2024—was the era’s biggest economic story. The 2008 financial crisis exposed the fragility of integrated finance.

    Key termsBretton Woods · IMF / World Bank · WTO · NAFTA · 2008 crisis · China rise
    Exam focusDon’t just say “globalization.” Cite SPECIFIC institutions and SPECIFIC effects on labor markets.
    Primary sourceWTO Agreement, Preamble, 1994 — World Trade Organization
    The WTO founding document frames globalization as the path to prosperity — primary evidence of the economic ideology that both integrated the global economy and fueled resistance to it.
    Whose story is missing?

    “Another world is not only possible, she is on her way. On a quiet day, I can hear her breathing.” — Arundhati Roy, speech at the World Social Forum, Porto Alegre, Brazil, January 27, 2003

    Roy (b. 1961), Indian novelist and activist, delivered this address at the World Social Forum—the anti-globalization movement’s annual counter-summit to the World Economic Forum in Davos. She documented how the Bretton Woods institutions (IMF, World Bank, WTO) had locked Global South nations into trade agreements that benefited wealthy nations at their expense. Her words became a slogan of the global justice movement. They represent the perspective of those for whom economic globalization has meant dispossession rather than development. Read the source →

  • 9.5

    Calls for Reform and Responses

    NGOs, populism, anti-globalization.GOV · SOC

    What to study

    Discontent with the global order produced multiple movements. Anti-globalization protests (Seattle 1999, Genoa 2001) targeted the WTO and IMF. NGOs (Doctors Without Borders, Greenpeace, Human Rights Watch) built transnational advocacy networks. From the 2010s onward, populist nationalism rose: Brexit (2016), Trump’s 2016 victory, Modi in India, Bolsonaro in Brazil, Orbán in Hungary. The pendulum has swung between integration and reaction; current politics is the swing.

    Key termsWTO protests · NGOs · Populism · Brexit · Authoritarian populism
    Exam focusConnect economic conditions to political backlash. The 2008 crisis directly preceded populist surges.
    Primary sourceUniversal Declaration of Human Rights, 1948 — United Nations
    The UN’s foundational rights document — the reference point for every reform movement since 1948, from decolonization to women’s rights to indigenous rights to environmental justice.
    Whose story is missing?

    “We have nothing to lose, absolutely nothing—no decent roof over our heads, no land, no work, poor health, no food, no education, no right to freely and democratically elect our officials, no independence from foreigners, no peace or justice for ourselves and our children.” — EZLN Zapatista Army of National Liberation, First Declaration of the Lacandon Jungle, Chiapas, Mexico, January 1, 1994

    The Zapatistas launched their uprising on January 1, 1994—the day NAFTA went into effect—in Chiapas, Mexico’s poorest state. The timing was deliberate: they argued that the free trade agreement would accelerate the dispossession of Indigenous Mexican communities. Their declaration, written in the name of the Indigenous Maya peoples of Chiapas, drew on five hundred years of colonial history to explain a contemporary uprising. They became one of the defining voices of the anti-globalization movement. Read the source →

  • 9.6

    Globalized Culture

    Media, sports, religion, syncretism.CDI

    What to study

    Global culture is partly homogenizing (Hollywood, K-pop, Premier League soccer, English as global lingua franca) and partly diversifying (regional revivals, religious resurgence, digital subcultures). Religious pluralism: Pentecostalism’s explosion in Africa and Latin America; political Islam’s post-1979 prominence; Buddhism in the West. Western consumer culture spreads with Coca-Cola and McDonald’s, but also gets adapted everywhere it lands. Identity politics—national, ethnic, religious, gendered—is the era’s new political idiom.

    Key termsHollywood · K-pop · Pentecostalism · Political Islam · Identity politics
    Exam focusPair homogenization (English, Hollywood) with diversification (regional revivals). Both happen at once.
    Primary sourceKofi Annan, We the Peoples (Millennium Report, Chapter 1), 2000 — United Nations
    The UN Secretary-General’s report at the Millennium Summit frames globalization’s benefits and inequalities — a primary source on how the global community understood cultural and economic change at century’s end.
    Whose story is missing?

    “The single story creates stereotypes, and the problem with stereotypes is not that they are untrue, but that they are incomplete. They make one story become the only story. And the consequence of a single story is this: It robs people of dignity. It makes our recognition of our equal humanity difficult.” — Chimamanda Ngozi Adichie, “The Danger of a Single Story,” TED Talk, Oxford, July 2009

    Adichie (b. 1977), a Nigerian novelist, delivered this talk describing how Western media and literature had presented Africa as a single, impoverished, disaster-prone continent—and how that single story had shaped her own early perceptions of Mexico, and of herself. Her argument is directly relevant to globalized culture: the flow of media across borders is not neutral. The stories that dominate global media come from particular places and serve particular interests, and they shape how billions of people understand each other. Read the source →

  • 9.7

    Resistance, Continuity, Change

    What’s actually new since 1900.CCO

    What to study

    On a continuity-and-change FRQ for the 20th–21st century: CHANGES include scale of state, mass democracy, decolonization, women’s public rights, technological speed, climate as political fact, end of European hegemony. CONTINUITIES include great-power rivalry (now U.S.–China), commodity dependence in much of the Global South, ethnic and religious conflict, gender hierarchies in much of the world, capitalist organization of production. The 20th century broke many things, but not everything.

    Key termsContinuity · Change · Decolonization · Great-power rivalry · Capitalism
    Exam focusFor continuity-and-change essays: pick 2 strong CHANGES and 2 strong CONTINUITIES with specific evidence each.
    Primary sourceArundhati Roy, The Ordinary Person’s Guide to Empire (excerpt), 2004 — Fordham Internet History Sourcebooks
    Roy articulates the global justice movement’s critique of U.S. imperialism and corporate globalization — the resistance perspective that challenged both continuity and the dominant narrative of progress.
    Whose story is missing?

    “Decoloniality is not the same as decolonization. It means de-linking from the colonial matrix of power—from the ways of knowing, being, and governing that were imposed by European colonialism and that continue to structure our world long after the flags came down.” — Walter Mignolo, Local Histories/Global Designs: Coloniality, Subaltern Knowledges, and Border Thinking, 2000 (approximate)

    Mignolo (b. 1941), an Argentine semiotician and scholar at Duke University, developed the concept of the “colonial matrix of power”—the argument that colonialism did not end with political independence but continues in the structures of knowledge, economics, and governance that former colonial powers established. His work asks: if the AP World History course itself is organized around a periodization and set of categories developed by European and North American scholars, whose “world” does it actually describe? Read the source →

Practice the skill — LEQ

Practice LEQ stem.

Evaluate the extent to which post-1980 globalization transformed economic AND cultural life in either the Global South OR the Global North.

Practice in the LEQ Lab

Connect to your study

Era page: see the Eras of World History hub for the period’s broader global context.

Practice: FRQ Lab · Practice MCQs · Unit 9 flashcards