AP Human Geography Unit 3 ReviewCultural Geography

AP Human Geography Unit 3, Cultural Patterns and Processes, is about how culture forms, spreads, and rewrites the look of places. The single biggest idea is diffusion, the movement of cultural traits like language and religion from hearths to new locations, and what happens when cultures meet (acculturation, assimilation, syncretism, multiculturalism). The unit makes up 12-17% of the AP exam, and almost everything in it comes back to one skill, which is reading the cultural landscape as evidence of who lives somewhere and what they value.

What this unit covers

What culture is and how to see it (Topics 3.1-3.2)

• Culture is the shared practices, technologies, attitudes, and behaviors a society transmits. Cultural traits are the individual pieces, like food preferences, architecture, and land use.
• Two opposite attitudes toward difference frame the whole unit. Ethnocentrism judges other cultures by your own culture's standards. Cultural relativism evaluates a culture by its own standards.
• The cultural landscape is the visible imprint of culture on the land. It combines physical features, agricultural and industrial practices, religious and linguistic markers, traditional and postmodern architecture, and evidence of sequent occupancy, where successive societies leave layers on the same place (think of a city with Spanish colonial plazas under modern glass towers).
• Land use also reflects beliefs and identities. Attitudes toward gender (including women in the workforce), ethnic neighborhoods like Chinatowns or Little Italys, and indigenous lands all shape how a society organizes space.

Cultural patterns and sense of place (Topic 3.3)

• Regional patterns of language, religion, and ethnicity create a sense of place and drive placemaking, the way communities turn generic space into meaningful place.
• These same traits cut both ways politically. Shared language or religion can be a centripetal force that unifies a state. Linguistic or religious divides can be a centrifugal force that pulls it apart. This is your bridge into Unit 4.

How culture spreads (Topics 3.4-3.6)

• Relocation diffusion happens when people physically move and carry culture with them, like migrants bringing their religion to a new country.
• Expansion diffusion spreads a trait while it stays strong at the hearth, and it comes in three flavors. Contagious diffusion spreads person to person in all directions, like a viral meme. Hierarchical diffusion jumps between nodes of power or connectivity, like fashion moving from Paris to other major cities before small towns. Stimulus diffusion spreads the underlying idea while the specific trait changes, like McDonald's selling vegetarian menus in India.
• Historically, colonialism, imperialism, and trade pushed culture across oceans, producing new forms like creolization (blended languages and cultures) and lingua francas (common languages for communication, like English in global business).
• Today, urbanization and globalization do that work through media, technology, politics, economics, and social relationships. The internet and time-space convergence (places effectively getting "closer" as communication speeds up) accelerate cultural exchange dramatically. Social media can spread a trend worldwide in days, something colonialism took centuries to do.

Religion and language across the map (Topic 3.7)

• Language families, languages, dialects, world religions, ethnic cultures, and gender roles all diffuse outward from cultural hearths, their points of origin.
• The Indo-European language family is the named example. You should be able to read its spread on maps, charts, and in toponyms (place names that record who settled where).
• Religions have distinct hearths and distinct diffusion stories. Universalizing religions like Christianity, Islam, and Buddhism actively seek converts, so they spread far from their hearths through missionaries, trade, and conquest. Ethnic religions like Hinduism and Judaism are tied to a particular people and place, so they spread mainly through relocation diffusion and stay more geographically concentrated.

What happens after cultures collide (Topic 3.8)

• Acculturation means adopting some traits of a dominant culture while keeping your own, like immigrants learning English but still celebrating Lunar New Year.
• Assimilation goes further. The original culture largely fades as a group is absorbed into the dominant one.
• Syncretism fuses two cultures into something new, like Vodou blending West African religion with Catholicism.
• Multiculturalism means multiple distinct cultures coexisting in one society, visible in cities with side-by-side ethnic neighborhoods.

Unit 3, Cultural Geography at a glance

Why Unit 3, Cultural Geography matters in AP HuG

This is the unit where the course's core move, using spatial patterns to explain human behavior, gets applied to identity itself. Culture explains why two places with similar physical geography can look and feel completely different, and the unit's process vocabulary (diffusion, acculturation, syncretism) becomes the toolkit you reuse for the rest of the course.

• Diffusion is arguably the most reusable model in AP HuG. The same relocation/expansion framework explains how diseases, crops, technologies, and political ideas spread in later units.
• Centripetal and centrifugal forces introduced here are the engine of Unit 4's politics, from nationalism to devolution.
• Reading the cultural landscape is a tested skill in its own right. Photo and map stimuli asking "what does this landscape reveal about the culture that built it" show up across the exam.

How this unit connects across the course

• Scale of analysis and regions from Thinking Geographically (Unit 1) are how you actually study culture. A formal linguistic region, a perceptual region like "the South," and toponym maps are all Unit 1 tools applied to Unit 3 content.
• Migration (Unit 2) is the vehicle for relocation diffusion. Push and pull factors explain why people move, and Unit 3 explains what their culture does when they arrive, from ethnic neighborhoods to acculturation and assimilation.
• Centrifugal and centripetal forces pay off directly in Political Patterns and Processes (Unit 4), where language and religious divides drive ethnonationalism, devolution, and boundary disputes.
• Globalization and time-space convergence return in Industrial and Economic Development (Unit 7), where the same forces spreading pop culture also spread manufacturing, services, and consumer markets.

Key thinkers and models

• Carl Sauer: defined the cultural landscape concept, the idea that culture acting on the natural environment produces the visible landscape.
• Torsten Hägerstrand: developed diffusion theory, the basis for the relocation and expansion diffusion types you classify on the exam.
• Sequent occupancy: the model of landscapes as layers left by successive cultures occupying the same place over time.
• Expansion diffusion model: the three-part breakdown (contagious, hierarchical, stimulus) for how traits spread without people relocating.
• Time-space convergence: the idea that improved communication and transport shrink the effective distance between places, speeding diffusion.
• Hearth model: the principle that languages, religions, and other traits originate in identifiable source regions and diffuse outward in traceable paths.
• Universalizing vs. ethnic religion framework: the model explaining why Christianity, Islam, and Buddhism diffused globally while Hinduism and Judaism stayed tied to peoples and places.

Unit 3, Cultural Geography on the AP exam

Unit 3 carries 12-17% of the exam, making it one of the heavier units. On the multiple-choice section, expect stimulus questions built on maps of language families or world religions, photos of cultural landscapes, and short scenarios where you have to name the diffusion type at work. The classic move is a one-sentence vignette ("a pop song spreads from major cities to small towns") that you match to hierarchical, contagious, stimulus, or relocation diffusion.

On the free-response section, cultural geography content fits all three FRQ formats. You might define and apply concepts like syncretism or sequent occupancy with your own examples, analyze a map or image of a cultural landscape and explain what it reveals, or compare the diffusion of a universalizing religion with an ethnic religion. The verbs to practice are define, describe, explain, and compare, and the difference between a 0 and a point is usually a specific named example (a real religion, language, or place) attached to the concept.

Essential questions

• Why do cultural practices vary from place to place, and how do physical geography and resources shape them?
• How do landscapes record the beliefs, identities, and histories of the people who built them?
• What determines whether a cultural trait spreads worldwide, changes as it moves, or disappears?
• When cultures come into contact, what decides whether the result is blending, coexistence, or absorption?

Key terms to know

• Cultural trait: a single element of culture, such as a food preference, building style, or land-use practice.
• Cultural relativism: evaluating a culture by its own standards rather than your own.
• Ethnocentrism: judging other cultures by the standards of your own, usually assuming yours is superior.
• Sequent occupancy: the layered imprint left on a landscape by successive cultures occupying the same place.
• Placemaking: the process by which communities give meaning and identity to a space, turning it into a place.
• Centripetal force: a cultural trait, like a shared language, that unifies a group or state.
• Centrifugal force: a cultural trait, like a religious divide, that pulls a group or state apart.
• Creolization: the blending of two or more cultures or languages into a new form, common in former colonial regions.
• Lingua franca: a common language used for communication between speakers of different native languages.
• Toponym: a place name, which often preserves evidence of who settled or controlled an area.
• Universalizing religion: a faith that seeks converts worldwide, such as Christianity, Islam, or Buddhism.
• Ethnic religion: a faith tied to a particular people and place, such as Hinduism or Judaism, spread mainly by relocation.
• Syncretism: the fusion of two cultural or religious traditions into a distinct new one.
• Time-space convergence: the shrinking of effective distance between places as communication and transport improve.

Common mix-ups

• Acculturation vs. assimilation: acculturation keeps the original culture while adopting some dominant traits; assimilation means the original culture largely fades. If the group still visibly practices its heritage, it is acculturation.
• Stimulus vs. contagious diffusion: contagious spreads the trait unchanged to everyone nearby; stimulus spreads the underlying idea while the trait itself is modified to fit the new culture.
• Hierarchical diffusion is about nodes, not distance: a trend can jump from New York to Tokyo before reaching rural New Jersey. If it skips down a ranking of cities or influencers, it is hierarchical even when nearby places are passed over.
• Relocation vs. expansion diffusion: in relocation, the trait moves with people and may weaken at the origin; in expansion, the trait spreads to new people while staying strong at the hearth.