Cities and Globalization

By the end of this lesson, students will be able to (per CED LO PSO-6.B):

• Explain how cities embody processes of globalization (per LO PSO-6.B).
• Describe how world cities function at the top of the world's urban hierarchy and drive globalization (per EK PSO-6.B.1).
• Explain how cities are connected globally by networks and linkages and mediate global processes (per EK PSO-6.B.2).
• Rank cities by global function using the GaWC Alpha/Beta/Gamma framework.
• Apply spatial reasoning across scales (local, regional, national, global) to show how cities operate simultaneously at each (per Skill 5.B).

Per CED LO PSO-6.B, students must "explain how cities embody processes of globalization." The CED breaks that into two EKs: (1) world cities function at the top of the global urban hierarchy and drive globalization, and (2) cities are connected globally by networks and linkages and mediate global processes.

Why cities, not countries?

Flows of global finance, corporate decisions, migration, media, and technology do not move abstractly between nation-states. They move between specific cities: London to New York; Singapore to Shanghai; Tokyo to Los Angeles; Silicon Valley to Shenzhen. A country is globalized to the extent that its cities are nodes in these networks. Sub-Saharan Africa's growing cities are increasingly plugged in; their countries follow.

The "global city" idea

The modern world-cities literature traces to Saskia Sassen's 1991 book The Global City, which argued that the contemporary world economy concentrates command-and-control functions in a small set of cities (primarily New York, London, Tokyo). Later work extended this to Paris, Hong Kong, Singapore, and Shanghai. The GaWC (Globalization and World Cities) research network has systematically ranked cities by global connectivity since 1999.

The GaWC tier system is the most widely-used way to rank cities by global function. Six tiers, from Alpha++ at the top to sufficiency at the bottom.

What makes a city rank high

GaWC does not use population. A city can have 25M residents (like Dhaka) and rank below one with 5M (like Singapore) because world-city status depends on functional connectivity, not size:

• Producer services: density of accounting, law, advertising, banking, and management-consulting firms with global office networks.
• Corporate headquarters: concentration of Fortune 500 / Global 500 corporate HQs.
• Financial markets: stock exchanges, bond markets, foreign-exchange trading volume.
• International institutions: UN headquarters, WTO, NGO hubs, embassies.
• Air connectivity: international flight frequency and destination breadth.

Per EK PSO-6.B.2, cities are connected globally by networks and linkages that mediate global processes. Seven types of flow dominate.

Cities "mediate" global processes

The CED verb choice in EK PSO-6.B.2 — "mediate" — is important. Cities do not just host global processes; they shape them. A financial innovation in London's City becomes a global regulation. A design trend in Milan becomes global fashion. A tech protocol in Silicon Valley becomes global infrastructure. The physical and institutional resources of world cities alter what globalization looks like. Apply Skill 5.B: the global scale is produced by the city scale.

Four cases illustrating different positions in the global urban hierarchy.

United Kingdom · London Alpha++

~9.5M; GaWC Alpha++ (tied with NYC)

London is EK PSO-6.B.1's canonical world city. It hosts roughly 40 percent of global foreign-exchange trading, the world's largest legal services market, and more Fortune 500 European HQs than any other city. The UK is a middle-sized economy but London dominates specific global functions. The city and country are not the same unit.

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Singapore · Small Country, Alpha+ City

~5.9M; GaWC Alpha+; #2 world port

Singapore is practically synonymous with its city; the country is the city. GaWC ranks it Alpha+ based on its role as Southeast Asian headquarters for multinational firms, its port, and its regional financial services. Small population but top-tier global connectivity — showing EK PSO-6.B.1's point that function matters more than size.

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UAE · Dubai's Fast Global Rise

~3.6M; GaWC Alpha+ (rose from Gamma in 2000)

Dubai climbed from Gamma in 2000 to Alpha+ in 2020. Its rise illustrates EK PSO-6.B.2's networks in action: deliberate policy made Dubai an air hub (Emirates airline), a re-export hub (Jebel Ali port), a financial hub (DIFC), and a regional headquarters city for multinationals. A city that engineered its way into the global hierarchy.

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Nigeria · Lagos Gamma (Rising)

~15M; GaWC Gamma; Africa's 2nd-ranked city

Lagos is Africa's second-highest-ranked world city in GaWC (Johannesburg is first). Its ~15M population makes it a megacity; its Gamma ranking reflects emerging but limited global function. The growth of Nollywood, fintech (Flutterwave, Paystack), and regional banking hub functions is raising its integration. Demonstrates how EK PSO-6.B.1's hierarchy is not static.

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1. Per EK PSO-6.B.1, world cities "drive" globalization. Defend or challenge this claim: could globalization proceed if its top 20 cities suddenly lost their current functions?
2. GaWC uses producer-services firm networks to rank cities. What does this metric capture well? What does it miss?
3. Is Dubai's engineered rise to Alpha+ replicable? Could Kigali, Rwanda or Addis Ababa, Ethiopia become Alpha+ cities in 20 years?
4. Per EK PSO-6.B.2, cities "mediate" global processes. Pick one global process (COVID response, Ukraine war sanctions, AI deployment) and trace it through specific city nodes.
5. Apply Skill 5.B: how does the local scale (a single skyscraper's tenants) connect to the global scale (world foreign-exchange trading)? Walk through an example at four scales.

Draft alignment — pending educator review. AP HG codes correspond to the official College Board Course and Exam Description (Effective Fall 2020, V.1). Statements below are paraphrased in CountryReports' own voice; refer to the College Board's published CED for verbatim wording.

AP® and Advanced Placement® are registered trademarks of the College Board. The College Board was not involved in the production of this material and does not endorse it. Standards statements above are paraphrased; codes refer back to the official College Board CED, the NCSS C3 Framework, the Common Core State Standards, and other cited frameworks.