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Cities and
Globalization

Explore how global cities function as command centers of the world economy, and how globalization reshapes urban hierarchies, networks, and landscapes.

AP Human Geography

What Is Globalization?

Globalization is the increasing interconnectedness of people, economies, and cultures across the world through trade, technology, migration, and the flow of ideas. It compresses space and time: a decision made in Tokyo can affect workers in São Paulo within hours.

Why Cities Matter in a Globalized World

Economic Hubs
Cities generate over \(80\%\) of global GDP and concentrate financial markets, corporate headquarters, and innovation centers.
Cultural Nodes
Urban areas are melting pots where migration streams converge, creating diverse cultural landscapes and ethnic enclaves.
Political Power
Global cities host international organizations, embassies, and NGOs that shape policy far beyond national borders.

Defining World Cities

A world city (or global city) is an urban center that exerts significant influence on international commerce, finance, culture, and politics. The concept was developed by sociologist Saskia Sassen in her influential 1991 study.

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Command and control: Houses headquarters of multinational corporations and global financial institutions.
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Advanced producer services: Concentrated in finance, law, accounting, advertising, and consulting firms.
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Innovation hub: Generates new ideas, technologies, and cultural products that diffuse globally.
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Transportation node: Major international airports, seaports, and digital infrastructure connecting regions.

The Global City Hierarchy

Alpha ++ London, New York Alpha + Tokyo, Paris, Singapore, Hong Kong Beta Mumbai, Istanbul, Lagos, Seoul Gamma Nairobi, Lima, Bucharest, Cape Town GaWC CLASSIFICATION

Core-Periphery Model and Cities

PERIPHERY SEMI-PERIPHERY CORE Global cities Capital, innovation Raw materials, labor

Immanuel Wallerstein's world-systems theory explains how core countries (with global cities) dominate economic production, while periphery regions supply raw materials and cheap labor. Semi-periphery nations (like Mexico and Brazil) occupy an intermediate role.

World City vs. Megacity

World City Megacity
Definition Global economic and political influence Population \( > 10 \) million
Key Measure Connectivity in finance and services Population size
Example London (\(9\)M people, Alpha++) Lagos (\(16\)M people, Beta)
Overlap? Tokyo is both: a megacity (\(37\)M) and Alpha+ world city

How Globalization Reshapes Cities

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Economic restructuring: Manufacturing shifts to periphery; core cities specialize in services and knowledge economies.
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Social polarization: Global cities develop a dual labor market: high-paid professionals and low-wage service workers, hollowing the middle class.
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Cultural landscapes: Global brands, ethnic enclaves, and transnational neighborhoods transform the built environment.
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Infrastructure investment: Airports, fiber-optic networks, and high-speed rail link cities into global networks, while peripheral areas may be bypassed.

Global City Networks

NYC LON TKY SIN LAG MUM Alpha Beta Gamma

How to Analyze a City's Global Role

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Identify economic function: Does the city host multinational HQs, stock exchanges, or major financial institutions?
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Assess connectivity: How many global airline routes, fiber-optic connections, and international organizations are present?
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Examine cultural influence: Is the city a center for media, fashion, art, or education that shapes global trends?
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Consider power dynamics: Use the core-periphery model to place the city within world-systems theory.
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Evaluate consequences: Look for social polarization, gentrification, or loss of local culture as evidence of globalization's impact.

Example: Dubai as an Emerging World City

1970s Oil economy 1990s Free trade zones Diversification 2000s Global tourism hub Finance center 2020s Alpha city Global node INCREASING GLOBAL CONNECTIVITY →

Example: New York City as Alpha++ City

Finance
Home to Wall Street, NYSE, and headquarters of major global banks. Controls trillions in capital flows daily.
Culture
Broadway, major museums, global media companies, and the United Nations headquarters shape global culture and policy.
Migration
Over 200 languages spoken. Ethnic enclaves like Chinatown, Little Italy, and Jackson Heights reflect transnational connections.

Example: Nairobi as a Gateway City

Nairobi, Kenya is classified as a Gamma-level world city, but it functions as East Africa's primary gateway to the global economy. It illustrates how cities in the semi-periphery can leverage globalization.

Tech Hub
"Silicon Savannah" hosts Google, Microsoft, and hundreds of tech startups, bypassing traditional industrial development.
UN Presence
Hosts UN-HABITAT and UNEP, giving Nairobi outsized political influence relative to its economic output.

Common Mistakes

✕ Size = Importance
Assuming the largest cities are automatically the most globally influential. Lagos has \(16\)M people but ranks as Beta, far below London (\(9\)M) at Alpha++ in global connectivity.
✕ Globalization = Westernization
Globalization is multidirectional. K-pop from Seoul, Bollywood from Mumbai, and fintech from Nairobi all flow outward, not just Western culture inward.
✕ Ignoring Scale
Forgetting that globalization operates at multiple scales simultaneously: global, national, regional, and local. An AP FRQ may ask you to address more than one.

Summary Comparison

Concept Definition Key Example AP Tip
World City Global influence via finance and services London, NYC Ranked by connectivity
Megacity Population \( > 10 \) million Lagos, Dhaka Size \(\neq\) influence
Core Dominant economic region USA, EU, Japan Command and control
Periphery Dependent, resource-exporting region Haiti, Chad Exploited in world-system
Semi-periphery Intermediate: exploits and is exploited Brazil, India Can rise or fall

Question 1 of 5

Which of the following is the primary criterion used by the GaWC to classify a city as a "world city"?

Question 2 of 5

Lagos, Nigeria has a population of over \(16\) million but is classified as a Beta-level world city. Which statement best explains this?

Question 3 of 5

According to Wallerstein's world-systems theory, which best describes the role of semi-periphery countries?

Question 4 of 5

Dubai's rise as a world city is best explained by which of the following strategies?

Question 5 of 5

Which of the following is an example of social polarization caused by globalization in a world city?