How do Rostow's stages, Wallerstein's world-systems theory, and dependency theory explain why some countries develop and others remain poor?
Topic 7.5 Theories of Development: explain the theories of economic development, including Rostow's stages of growth and Wallerstein's world-systems theory, and their critiques.
A focused answer to AP Human Geography Topic 7.5, explaining Rostow's stages of economic growth, Wallerstein's world-systems theory (core, periphery, semi-periphery), dependency theory, and the critiques of each.
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What this topic is asking
Topic 7.5 covers the theories that explain why some countries develop and others stay poor. The College Board wants you to explain Rostow's stages of economic growth (a modernization, linear model), Wallerstein's world-systems theory (core, periphery, semi-periphery), and the related dependency theory, and to critique each. The skill is to apply and contrast competing explanations of development.
Rostow's stages of economic growth
The classic modernization model is linear and optimistic.
Rostow is a modernization theory: it locates the causes of development inside a country and treats the wealthy West as the model others can follow.
Wallerstein's world-systems and dependency theory
The opposing view sees development and poverty as linked.
Where Rostow says any country can climb the stages, world-systems and dependency theories say the global structure itself traps the periphery in a subordinate role.
Critiquing the theories
The exam rewards evaluating each model.
- Critiques of Rostow: it assumes a single Western path, ignores colonialism and global trade that trap poor countries, treats countries as independent when they are linked, and overlooks that the periphery's resources flow to the core.
- Critiques of world-systems and dependency: they can be too deterministic, downplaying countries (such as some semi-periphery states) that have risen, and offering less clear guidance on how to develop.
Together the theories frame the debate of the rest of the unit: trade (7.6), the changing world economy (7.7), and sustainable development (7.8), and the world-systems map parallels the global urban hierarchy of Topic 6.3.
Why this matters for the exam
Topic 7.5 is one of the most tested in Unit 7, supplying the frameworks used to interpret the measures of development (7.3) and the global economy (7.6, 7.7). FRQs ask you to describe Rostow, contrast it with world-systems theory, or criticize a model, so practice applying and evaluating these competing explanations, much as you do the DTM (Topic 2.5).
Try this
Q1. Identify which tier of world-systems theory supplies cheap raw materials and labor and depends on wealthier nations. [Recall]
- Cue. The periphery; it consists of less developed countries that supply cheap materials and labor and depend on the core, while the semi-periphery sits in between.
Q2. Explain one criticism of Rostow's stages of economic growth. [Short explanation]
- Cue. Rostow assumes a single Western path and treats countries as independent, ignoring how colonialism and global trade trap poor countries and how the periphery's resources flow to the core, so not every country can simply climb the stages.
Exam-style practice questions
Practice questions written in the style of College Board exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
AP 2018 (style)1 marksIn Wallerstein's world-systems theory, countries that provide cheap raw materials and labor and depend on wealthier nations are classified as the: (A) core. (B) semi-periphery. (C) periphery. (D) hearth.Show worked answer →
A stimulus-style multiple choice item. The correct answer is (C).
In world-systems theory, the periphery consists of less developed countries that supply cheap raw materials and labor and depend on the core. The core (A) is the wealthy, industrialized nations that dominate global trade and finance; the semi-periphery (B) is in between, with features of both; hearth (D) is a diffusion term, not part of world-systems theory.
The exam reward is matching dependent suppliers of raw materials and labor to the periphery.
AP 2021 (style)3 marksGeographers use theories to explain development. (A) Describe the basic idea of Rostow's stages of economic growth. (B) Explain how Wallerstein's world-systems theory differs from Rostow's model. (C) Explain ONE criticism of Rostow's model.Show worked answer →
A 3-point describe-explain FRQ.
(A) Describe (1 point): Rostow's model holds that all countries pass through five stages of growth, from traditional society to high mass consumption, by accumulating capital and modernizing, so development is a linear process every country can follow.
(B) Explain (1 point): world-systems theory rejects the idea that every country can independently climb stages; it sees a single global system in which core countries grow by exploiting a dependent periphery, so development and underdevelopment are linked.
(C) Explain (1 point): a criticism of Rostow is that it assumes a single Western path, ignores how colonialism and global trade trap poor countries, and overlooks that the periphery's resources flow to the core, so not every country can simply climb the stages.
Markers reward an accurate Rostow description, a clear world-systems contrast, and a valid criticism.
Related dot points
- Topic 7.3 Measures of Development: explain how economic and social indicators, including GDP, GNI, the HDI, and the GII, are used to measure development.
A focused answer to AP Human Geography Topic 7.3, explaining how economic indicators (GDP, GNI per capita), the Human Development Index, and the Gender Inequality Index measure development, and their strengths and limits.
- Topic 7.6 Trade and the World Economy: explain how comparative advantage, complementarity, trade agreements, and international institutions shape the global economy.
A focused answer to AP Human Geography Topic 7.6, explaining comparative advantage, complementarity, trade agreements and blocs, neoliberal trade policy, and the role of international institutions in the world economy.
- Topic 7.7 Changes from the World Economy: explain how the global economy has changed, including outsourcing, offshoring, post-Fordist production, special economic zones, and newly industrializing economies.
A focused answer to AP Human Geography Topic 7.7, explaining how the global economy has changed through outsourcing, offshoring, post-Fordist flexible production, special economic zones, and newly industrializing economies.
- Topic 2.5 The Demographic Transition Model: explain the stages of the Demographic Transition Model and the Epidemiological Transition, and evaluate the model's usefulness and limits.
A focused answer to AP Human Geography Topic 2.5, explaining the five stages of the Demographic Transition Model, the matching Epidemiological Transition, the population pyramids and growth rates at each stage, and the strengths and limits of the model.
- Topic 6.3 Cities and Globalization: explain how globalization influences urban patterns and processes, including the role of world cities and the urban hierarchy of global influence.
A focused answer to AP Human Geography Topic 6.3, explaining how globalization shapes urban patterns, the role of world cities as centers of global economic command, and the global urban hierarchy.
Sources & how we know this
- AP Human Geography Course and Exam Description — College Board (2020)