| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
CDI | Unit 6.A |
|
Consequences of Industrialization
AP World History: Modern · Topic 6
6:14
Unit 6: Consequences of Industrialization
This is the unit on the consequences of industrialisation, 1750 to 1900. One distinction decides most of the marks in this unit, and it is easy to state and…
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6.1
Justifying Empire
Syllabus
Source: College Board AP Course and Exam Description
Unit 6 covers the consequences of industrialisation 工业化, 1750 to 1900: why industrial states expanded, how people resisted, how the world economy reorganised, and who moved.
A range of cultural, religious, and racial ideologies 意识形态 were used to justify imperialism 帝国主义. The examinable ones are the civilising mission 文明教化使命, missionary 传教 activity, Social Darwinism 社会达尔文主义 applied to nations and peoples, and nationalism 民族主义 - the claim that colonies proved a state's greatness.
These are justifications 辩护理由: arguments used to defend empire. Ideologies could also motivate expansion. Distinguish the type of explanation without assuming that belief, profit and strategy operated separately.

Match each justification to the claim it makes
Identify ideological claims about duty, a supposed natural hierarchy or national prestige; do not endorse their assumptions.
| English |
|---|
| industrialisation |
| imperialism/ɪmˈpɪərɪəlɪzəm/ |
| civilising mission/ˈsɪvəlaɪzɪŋ ˈmɪʃn/ |
| missionary |
| Social Darwinism/ˈsəʊʃl ˈdɑːwɪnɪzəm/ |
| nationalism/ˈnæʃənəlɪzəm/ |
| justification |
6.2
State Expansion
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
GOV | Unit 6.B |
|
Illustrative examples:
- Non-state to state colonial control:
- Shift from the private ownership of the Congo by King Leopold II to the Belgium government
- Shift from the Dutch East India Company to Dutch government control in Indonesia and Southeast Asia
- European states that expanded empires in Africa:
- Britain in West Africa
- Belgium in the Congo
- French in West Africa
- Settler colonies established in empires:
- New Zealand
Source: College Board AP Course and Exam Description
Expansion took several forms, and the CED distinguishes them:
- Some states strengthened control over existing colonies, converting trading relationships into direct rule.
- European states, the United States, and Japan acquired new territory, showing that imperialism was not only European.
- Many European states used both warfare and diplomacy 战争与外交 to expand - conquest, but also treaties 条约, protectorates 保护国, and partition 分治 agreements made in Europe.
- Europeans established settler colonies 定居殖民地 in some places, which involved settlement and the displacement 驱离 of Indigenous 原住民 populations. Other forms of colonial rule could also be highly destructive.
- The United States, Russia, and Japan expanded through contiguous 毗连的 and nearby territorial conquest. This was not exclusive: the United States and Japan also acquired overseas territories.
| English |
|---|
| warfare and diplomacy/ˈwɔːfeə ænd dɪˈpləʊməsi/ |
| treaty |
| protectorate |
| partition/pɑːˈtɪʃn/ |
| settler colonies/ˈsetlə ˈkɒləniz/ |
| displacement/dɪˈspleɪsmənt/ |
| Indigenous/ɪnˈdɪdʒənəs/ |
| contiguous |
6.3
Resistance
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
GOV | Unit 6.C |
|
Illustrative examples:
- Direct resistance:
- Túpac Amaru II’s rebellion in Peru
- Samory Touré’s military battles in West Africa
- Yaa Asantewaa War in West Africa
- 1857 rebellion in India
- New states:
- Establishment of independent states in the Balkans
- Sokoto Caliphate in modern-day Nigeria
- Cherokee Nation
- Zulu Kingdom
- Rebellions:
- Ghost Dance in the U.S.
- Xhosa Cattle-Killing Movement in Southern Africa
- Mahdist wars in Sudan
Source: College Board AP Course and Exam Description
Anti-imperial resistance 抵抗 took various forms, and the examples must fit the question:
- Direct resistance 直接抵抗 - armed rebellion 起义 against colonial authority.
- Creation of new states 建立新国家 by leaders organising against imperial power.
- Religious and cultural movements 宗教与文化运动 that reasserted local identity against colonial rule.
Increasing questions about political authority and growing nationalism in colonised regions led to rebellions, some of which were sustained enough to change imperial policy. Resistance occurred at different points throughout the period. Its causes, aims and outcomes varied; not every movement was nationalist or successful.

The examples the CED names, one per form
An essay needs a case, not a category. These are the ones the CED lists, sorted by the form of resistance they illustrate:
| Case | Where | Form it illustrates |
|---|---|---|
| Samory Touré's 萨莫里·杜尔 military campaigns | West Africa | direct armed resistance, sustained for years against the French |
| Yaa Asantewaa War 雅阿·阿散蒂瓦战争 | Asante, West Africa | direct resistance led by a woman, in defence of a sacred symbol of sovereignty 主权 |
| Sokoto Caliphate 索科托哈里发国 | modern-day Nigeria | the creation of a NEW state, founded in a religious reform movement |
The Congo shows how the argument about empire changed. The territory was first held as the private property of King Leopold II of Belgium rather than as a colony of Belgium at all; the atrocities 暴行 of the rubber regime became an international scandal, and in 1908 ownership was transferred to the Belgian government. This illustrates a change from personal to state control under pressure from criticism. The transfer did not end colonial rule; it does not by itself prove that exploitation ended.
| English |
|---|
| resistance/rɪˈzɪstəns/ |
| Direct resistance/daɪˈrekt rɪˈzɪstəns/ |
| rebellion/rɪˈbelɪən/ |
| Creation of new states/kriːˈeɪʃn ɒv njuː steɪts/ |
| Religious and cultural movements/rɪˈlɪdʒəs ænd ˈkʌltʃərəl ˈmuːvmənts/ |
| Samory Touré's/ˈsæməri tʊəˈreɪz/ |
| Yaa Asantewaa War/jɑː əˈsæntjuːɑː wɔː/ |
| sovereignty/ˈsɒvərɪnti/ |
| Sokoto Caliphate/səˈkəʊtəʊ ˈkælɪfeɪt/ |
| atrocity |
6.4 6.5
The Global Economy
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
ENV | Unit 6.D |
|
Illustrative examples:
- Resource export economies:
- Cotton production in Egypt
- Rubber extraction in the Amazon and the Congo basin
- The palm oil trade in West Africa
- The guano industries in Peru and Chile
- Meat from Argentina and Uruguay
- Diamonds from Africa
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
ECN | Unit 6.E |
|
Illustrative examples:
- Industrialized states practicing economic imperialism:
- Britain and France expanding their influence in China through the Opium Wars
- The construction of the Port of Buenos Aires with the support of British firms
- Commodities that contributed to European and American economic advantage:
- Opium produced in the Middle East or South Asia and exported to China
- Cotton grown in South Asia and Egypt and exported to Great Britain and other European countries
- Palm oil produced in sub-Saharan Africa and exported to European countries
- Copper extracted in Chile
Source: College Board AP Course and Exam Description

The need for raw materials 原材料 for factories and increased food supplies 粮食供应 for growing urban populations reorganised production across the world. Colonies and dependent regions were pushed toward cash crops 经济作物 and extractive industries 采掘业, often at the cost of food production for local use.
The commodities 商品 are worth knowing by name and origin, because a question usually supplies one and expects you to place it: cotton from Egypt and India, rubber from the Congo and the Amazon, palm oil from West Africa, sugar from the Caribbean, guano from Peru, and meat from Argentina and Uruguay — the last made possible by refrigerated shipping 冷藏运输, which turned distant grassland into a supplier for European cities.
Economic imperialism 经济帝国主义 is the examinable distinction. Industrialised states and their businesses exercised control through investment 投资, loans 贷款, and trade dominance without necessarily taking political control - so a region could be economically dominated while remaining formally independent.
Trade in some commodities was organised so that merchants and firms in industrialised states held disproportionate power 不成比例的权力 over producers, setting prices and terms.

| English |
|---|
| raw materials/rɔː məˈtɪərɪəlz/ |
| food supplies/fuːd səˈplaɪz/ |
| cash crops/kæʃ krɒps/ |
| extractive industries/ekˈstræktɪv ˈɪndʌstriz/ |
| commodity |
| refrigerated shipping |
| Economic imperialism/ˌiːkəˈnɒmɪk ɪmˈpɪərɪəlɪzəm/ |
| investment/ɪnˈvestmənt/ |
| loan/ləʊn/ |
| disproportionate power/ˌdɪsprəˈpɔːʃənət ˈpaʊə/ |
6.6
Migration
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
ECN | Unit 6.F |
|
Unit 6.G |
|
Illustrative examples:
- Return of migrants:
- Japanese agricultural workers in the Pacific
- Lebanese merchants in the Americas
- Italian industrial workers in Argentina
- (CONT’D) Migrants:
- Irish to the United States
- British engineers and geologists to South Asia and Africa
Source: College Board AP Course and Exam Description
Migration 移民 in this period was shaped by demographic 人口 change in both sending and receiving societies, and by new modes of transportation 交通方式 - steamships 蒸汽船 and railways 铁路 - which increased the scale and ease of long-distance movement and made temporary or seasonal 临时或季节性 return more practical. Return migration already existed. Internal and external migration to cities also contributed to urbanisation 城市化.
Two kinds must be distinguished:
- Many people chose freely to relocate, usually in search of work.
- The global capitalist 资本主义的 economy continued to rely on coerced and semi-coerced labour 强制与半强制劳动, including enslavement 奴役, indentured servitude 契约劳工 and convict labour 囚犯劳动. Legal restrictions on the slave trade and slavery developed unevenly; they did not end coercion everywhere. A signed contract did not necessarily give a worker freedom to leave.

| English |
|---|
| migration/maɪˈɡreɪʃn/ |
| demographic |
| modes of transportation/məʊdz ɒv trænspɔːˈteɪʃn/ |
| steamship |
| railway |
| temporary or seasonal/ˈtemprəri ɔː ˈsiːzənl/ |
| urbanisation/ˌɜːbənaɪˈzeɪʃn/ |
| capitalist |
| coerced and semi-coerced labour/ˌkəʊˈɜːst ænd ˈsemi ˌkəʊˈɜːst ˈleɪbə/ |
| enslavement |
| indentured servitude/ˌɪnˈdentʃəd ˈsɜːvɪtjuːd/ |
| convict labour |
6.7
Effects of Migration
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
SIO | Unit 6.H |
|
Illustrative examples:
- Migrant ethnic enclaves:
- Chinese in Southeast Asia, the Caribbean, South America, and North America
- Indians in East and Southern Africa, the Caribbean, and Southeast Asia
- Irish in North America
- Italians in North and South America
- Regulation of immigrants:
- Chinese Exclusion Act
- White Australia policy
Source: College Board AP Course and Exam Description
Three effects are named directly in the CED:
- Migrants tended to be male, leaving women to take on new roles in the home societies they left.
- Migrants created ethnic enclaves 族裔聚居区 in destination societies, transplanting and adapting their cultures.
- Receiving societies did not always embrace immigrants 移入者, and the examinable evidence is legal exclusion 排斥 - most clearly the restriction of Chinese and other Asian migration in several countries.

Sort the two kinds of movement and their effects
Distinguish migration conditions and possible effects without assuming identical outcomes.
| English |
|---|
| ethnic enclaves/ˈeθnɪk ˈeŋkleɪvz/ |
| immigrant |
| exclusion |
6.8
Causation in the Imperial Age
Syllabus
| Learning Objective | Review: Unit 6 Key Concepts |
|---|---|
Unit 6.I |
|
Source: College Board AP Course and Exam Description
The unit develops comparison, explanation and argument. Topic 6.8 asks for the relative significance of the effects of imperialism, so a chain explaining its causes alone is insufficient.
Original practice, not a quoted past-paper question: Explain one way industrialisation contributed to imperialism, 1750–1900.
Worked response: Industrial factories increased demand for raw materials such as Egyptian cotton. States and firms sought influence over supply regions, and export production grew to serve industrial markets. This connects industrial demand with economic influence and production. It does not imply that cotton could not be grown anywhere in Europe, or that every export economy became a formal colony.
Evidence workshop: categories become explanations
The following case cards use the CED's named examples. They are original teaching summaries, not historical quotations or authentic exam extracts.
Card A — armed resistance: Samory Touré's military campaigns against the French in West Africa show direct resistance. Explain the opposition to imperial expansion; the category alone does not establish success or a shared nationalist ideology.
Card B — state formation: The Sokoto Caliphate, in modern-day Nigeria, illustrates new state formation associated with religious reform. Do not describe every new state as a successful war of independence from an already established European colony.
Card C — religious resistance: The Ghost Dance in the United States illustrates religious responses within the wider context of Indigenous resistance. Religious motivation and direct resistance can overlap; the three headings are not exclusive boxes.
Attempt 1: Compare Cards A and B. State one similarity in their relation to political power and one difference in their form of action.
Worked check: Both concern challenges to existing political authority. Touré's campaigns illustrate military resistance to French expansion; Sokoto illustrates the creation of a new political state linked to religious reform. The comparison does not prove that their origins, enemies or results were identical.
Attempt 2: Compare direct colonial rule with economic imperialism. Use the Congo transfer and the CED's example of British firms supporting the Port of Buenos Aires.
Worked check: In the Congo example, control passed from Leopold II to the Belgian state, changing the authority formally ruling the territory. British firms' support for the Port of Buenos Aires illustrates economic influence through investment without making Argentina a British colony. Economic imperialism could involve military pressure too, as the CED's Opium Wars example shows; informal influence is not automatically peaceful or free of coercion.
Attempt 3: Explain how an export economy links an environment to an industrial market. Choose Egyptian cotton, Congo/Amazon rubber, West African palm oil or meat from Argentina/Uruguay.
Worked check: Egyptian cotton supplied raw material for industrial textiles. Suitable production conditions and industrial demand supported export specialisation; export earnings could purchase manufactured goods. Evidence of export trade alone does not prove the same distribution of profits or the same degree of foreign control in every region.
Attempt 4: Explain two different effects of migration. Use one effect in a home society and one in a destination society.
Worked check: Where migration was mainly male, women could take on work and responsibilities previously held by men in home societies. In destination societies, Chinese migrant enclaves in Southeast Asia could maintain and adapt cultural practices. The Chinese Exclusion Act illustrates a different response: state restriction. These patterns were not inevitable for every migrant group; labour status, family composition and local conditions also mattered.
Argument practice: Evaluate whether economic reorganisation was the most significant effect of imperialism, 1750–1900. Compare it with political and social effects.
Possible argument: Export specialisation was a major effect because it linked production to distant industrial markets and could give foreign firms an advantage. However, changes in political control and resistance were also substantial, as the Congo transfer and Touré's campaigns illustrate. Migration changed responsibilities and communities across home and destination societies. The judgement depends on the region, group and timescale examined; evidence from one case cannot rank effects everywhere.
| English |
|---|
| ideology |
6.8
Worked example: a short-answer question
Each part needs only one or two sentences: answer the question, cite one specific piece of evidence, and explain how it supports the answer.
Answer (a), (b) and (c).
(a) Briefly describe ONE way Europeans justified imperialism in the 1800s.
(b) Briefly describe ONE way European states expanded their empires.
(c) Briefly describe ONE example of resistance to imperial rule.
Model answer.
- (a) Ideas such as Social Darwinism and a 'civilising mission' claimed that Europeans had a duty or right to rule other peoples.
- (b) At the Berlin Conference (1884–1885), European powers agreed rules for colonial claims and trade without African representation. The conference facilitated partition; it did not draw all Africa's borders at one meeting.
- (c) In the Indian Rebellion of 1857, Indian soldiers and civilians rose against British East India Company rule.
6.8
Exam tips
- Separate justifications (civilising mission, Social Darwinism) from causes (raw materials, markets, strategy). Questions often ask for one and reward not confusing it with the other.
- Economic imperialism can operate without formal colonial rule. Explain the mechanism and use evidence; the definition alone is not a full explanation.
- Choose relevant resistance cases and explain their aims and methods. Use a range when the question requires it, rather than a fixed three-category scoring rule.
- Migration questions want the split between free and coerced or semi-coerced movement.
- For effects, use the CED's own three: male migration changing home societies, ethnic enclaves, and exclusion laws.
- Causation answers must trace a mechanism. An effects question needs effects, and an extent question needs a supported judgement and relevant qualifications.
The German Federal Foreign Office’s account of the Berlin Conference distinguishes its rules for colonial claims from the later drawing of specific borders.
6.8
Sources for this lesson
College Board, AP World History: Modern Course and Exam Description, Unit 6, topics 6.1–6.8 (syllabi/ap/ap_world_history_CED.pdf, PDF pages 123–131). The examples above are teacher-authored practice grounded in that framework. No official marks or scoring outcomes are claimed.
Vocabulary card meanings
warfare and diplomacy: Fighting, and the negotiations that accompanied or replaced it. settler colonies: Colonies in which large numbers of migrants from the colonising country settled. Direct resistance: Open opposition, including armed revolt, against colonial rule. Creation of new states: The founding of countries as empires broke up or were overthrown. Religious and cultural movements: Organised revivals of faith or custom that also challenged foreign rule. Samory Touré's: The West African ruler's military resistance to French expansion. Yaa Asantewaa War: The Asante war of resistance, named for the queen mother who led it. Sokoto Caliphate: A large Islamic state in West Africa in the nineteenth century. food supplies: The crops and stores that fed a colony or a metropole. cash crops: Crops grown to be sold rather than to feed the grower's household, even if people nearby also eat them. extractive industries: Mining and similar work that takes raw materials from the ground, whether or not they are sent abroad. disproportionate power: Influence far larger than a group's numbers or formal status. modes of transportation: The different ways people and goods moved, from rail to ship. temporary or seasonal: Lasting only a short time, or returning at the same part of each year. coerced and semi-coerced labour: Work under full force, and work under heavy pressure short of outright slavery. indentured servitude: A contract to work for a term of years, often in a distant colony.
Interactive lessons on this topic
Work through it step by step, with instant-check exercises.