Unit 8 covers the period after 1945, and two processes run through it at once: a global ideological rivalry and the end of empire, or decolonization 非殖民化. Study their causes and effects, their interaction and the choices made by local actors; not every question requires both processes.

Hopes for greater self-government were largely unfulfilled after World War I. In the years following World War II, increasing anti-imperialist sentiment 反帝情绪 built momentum in colonised regions, contributed to independence and the restructuring of states. European powers’ wartime political and economic weakening reduced their ability to maintain empires. Nationalist organisation and demands for control of resources also mattered; change was neither automatic nor uniform.

At the same time, the technological and economic gains 技术与经济收益 made during World War II by the victorious nations shifted the global balance of power. This is the historical context the CED asks for: the war did not just destroy, it redistributed capability.

The shifted balance rapidly evolved into the Cold War - a power rivalry centred on the United States and Soviet Union, involving an ideological struggle 意识形态斗争 between capitalism 资本主义 and communism 共产主义. The United States was a democracy and the Soviet Union an authoritarian communist state; this does not mean every U.S.-supported government was democratic. The superpowers avoided an open full-scale war against one another while engaging in arms competition, intervention and support for allies.

The CED insists that this was not a world of only two options. Groups and individuals - including the Non-Aligned Movement 不结盟运动 - opposed and promoted alternatives to the existing economic, political, and social order. Leaders such as Sukarno in Indonesia and Kwame Nkrumah in Ghana sought room for independent action. Non-alignment did not mean no interests, no relations with either bloc or no influence from the Cold War. Local governments and movements had their own aims; they were not merely puppets. Include non-alignment when relevant to the prompt, not as an automatic scoring bonus.

The rivalry produced concrete institutions and conflicts:

• New military alliances 军事同盟 - NATO 北约 and the Warsaw Pact 华沙条约组织.
• Nuclear proliferation 核扩散 - the spread of nuclear weapons to more states.
• Proxy wars 代理人战争 between and within states, in which the two blocs supported opposing sides in conflicts elsewhere rather than fighting each other directly.

Compare how each superpower sought influence using specific evidence. NATO and the Warsaw Pact illustrate military alliances; the U.S. Marshall Plan illustrates economic aid for postwar European recovery and influence. Alliances, aid and interventions were distinct tools, not identical programmes in every region. Deterrence 威慑 through nuclear threats encouraged efforts to avoid direct superpower war and to limit proliferation; they did not eliminate conventional wars. Examples of proxy conflicts include the Korean War, the Angolan Civil War and the Sandinista–Contras conflict in Nicaragua. External support interacted with local aims and disputes.

Two examinable threads run here. First, China: as a result of internal tension 内部矛盾 and Japanese aggression 日本侵略, Chinese communists seized power, and established communist rule in China in 1949. Distinguish causes of gaining power from consequences of later policies.

Second, state control of the economy. As in the Soviet Five Year Plans of Unit 7, the Chinese government controlled the national economy through the Great Leap Forward 大跃进, implementing repressive policies with severe costs to the population, including devastating famine. State mobilisation aimed to transform production; the aim and the population’s experience must be distinguished. Comparison with Soviet planning can help explain a shared state role, but no universal exam question or identical outcome follows.

Beyond these, movements to redistribute land and resources developed within states in Africa, Asia, and Latin America, some advocating communism or socialism and some not. Land reform is not identical to communist revolution. Land reform in Indian states such as Kerala and the White Revolution in Iran illustrate why redistribution alone does not prove a government was communist. Some postcolonial African leaders were attracted to socialism as a development strategy, a rejection of colonial capitalist exploitation or a route to outside support; motives varied by case.

Nationalist leaders and parties 民族主义领袖与政党 in Asia and Africa sought varying degrees of autonomy within, or independence from, imperial rule. The examinable set of examples includes the Indian National Congress, Ho Chi Minh in French Indochina, Kwame Nkrumah in the Gold Coast, and Gamal Abdel Nasser in Egypt.

After World War II, some colonies negotiated their independence while others achieved it through armed struggle. India and the Gold Coast are the standard negotiated cases; Angola, Vietnam, and Algeria illustrative armed cases. Negotiation could coexist with protest, repression and violence. British India’s negotiated transfer was accompanied by partition and mass violence; “negotiated” does not mean peaceful in every respect. Armed struggle could also end in negotiations; the categories are not mutually exclusive life histories.

A third strand is easily missed: regional, religious, and ethnic movements challenged both colonial rule and the inherited imperial boundaries 沿袭的帝国边界 those empires left behind. The Muslim League in British India and the Biafra secessionist movement in Nigeria illustrate disputes over national identity and territorial authority. Boundaries could contribute to conflict, but competition for power, resources and outside intervention could also matter. No single phrase explains every conflict.

The redrawing of political boundaries after colonial withdrawal led to the creation of new states, and in some cases to conflict, population displacement, and resettlement. The partition 分治 of British India and creation of Pakistan illustrate state formation, violence and large-scale displacement. Territorial and demographic changes should be explained together without treating all migrants as having the same experience.

Economically, governments in newly independent states often took a strong role in guiding economic life to promote development - examples include Nasser’s development policies in Egypt and Nyerere’s modernisation in Tanzania. The strong state role can be compared with earlier economic intervention, but policies, political systems and results varied; state direction alone does not establish communist rule.

There was also a reverse flow of people: the migration of former colonial subjects to imperial metropoles - to former colonising countries, or metropoles 宗主国, usually to major cities - which maintained cultural and economic ties between the former colony and the former colonial power long after independence. Examples include South Asians moving to Britain and Algerians moving to France. Work, family and existing links can help explain migration; it is not automatically caused by an inherited border.

Although conflict dominated much of the twentieth century, many individuals and groups - including states - opposed that trend. The CED names three distinct patterns, and they should not be blurred:

• Groups and individuals challenged the wars of the century, and some - Mohandas Gandhi 甘地, Martin Luther King Jr. 马丁·路德·金, and Nelson Mandela 曼德拉 - promoted non-violence 非暴力 as a method of change.
• Militaries and militarised states often responded to the proliferation of conflicts in ways that further intensified them.
• Some movements used violence against civilians in an effort to achieve political aims.

Methods could change over time. The syllabus lists Mandela among leaders associated with nonviolence, but he also helped establish and lead the ANC’s armed wing in 1961. Do not present his whole career as exclusively nonviolent. Militarised states and movements targeting civilians are distinct categories, not a single kind of actor. Choose examples that fit the question rather than assuming every response needs all patterns.

The CED gives a compound cause here too: advances in United States military and technological development, the Soviet Union's costly and ultimately failed invasion of Afghanistan, public discontent 公众不满, and economic problems 经济困难 within the Soviet system.

These causes interacted. Military competition could increase pressure on a system facing economic problems and public discontent; the Afghanistan war added costs and damaged authority. The syllabus list does not assign weights, and an invasion abroad is not simply an internal event. Evaluate relative importance through evidence and mechanisms, not the number of bullets in a list.

An extent judgement assesses how far a claim is supported and qualifies its limits. It is not inherently a comparison word: use the relationship the prompt asks for. To compare Cold War effects across hemispheres, select a shared feature and explain specific examples in both. The Korean War and the Nicaragua conflict show outside support interacting with local conflicts, but their origins, actors and outcomes were not identical.

Original worked comparison. Compare one method of achieving independence in the Gold Coast and Algeria after 1945.

Worked check. In the Gold Coast, nationalist political organisation and negotiations accompanied the transfer of power from Britain. In Algeria, armed struggle against French rule was central to the process. Both sought an end to colonial control, but the relative role of prolonged anti-colonial war differed. This does not prove that negotiation guarantees stability or armed struggle determines the new state’s entire political future.

All tasks are original. Attempt before reading the checks; these are focused skill exercises, not full essays or guaranteed mark formulas.

1. Political and economic causes. Identify one political and one economic factor encouraging African decolonization after 1945. Explain how one could weaken imperial control.

Check. Nationalist mobilisation challenged colonial authority; European economic strain after World War II reduced the resources available to maintain empire. Linking reduced resources to the costs of administration and coercion explains a mechanism. The two labels alone do not explain every colony’s path.

2. Nuclear technology. Explain how nuclear weapons could discourage direct superpower war while conflict continued elsewhere.

Check. Fear of catastrophic retaliation increased the costs of direct war. Superpowers could nevertheless provide military aid and support opposing sides in local conflicts. Deterrence did not make the world peaceful or remove local actors’ aims.

3. Source and inference. Paraphrase of the documented Marshall Plan context, not a quotation: U.S. leaders proposed aid to help Europe recover and stabilise after World War II. Explain one plausible U.S. objective and one limit of using a U.S. policy statement to establish all recipients’ experiences.

Check. Recovery and political stability could support U.S. economic and strategic influence. An official statement reveals declared aims; it does not by itself prove how every recipient experienced the programme or that reconstruction was the only motive. Corroborate consequences with other evidence.

4. Test a causal claim. Assess: “Inherited borders caused government economic planning and migration to former imperial countries.” Distinguish the three processes.

Check. Border changes could contribute to territorial conflict and displacement. Economic planning could reflect development goals and political choices; migration could reflect work, family and existing colonial links. These are related aspects of decolonization with distinct mechanisms, not three automatic results of a line on a map.

5. Weigh causes. A student says: “The syllabus has more internal than external causes of the end of the Cold War, so internal causes were necessarily more important.” Explain the flaw and construct a better causal link.

Check. Counting entries does not measure historical importance. For example, military competition and the Afghanistan war increased pressures on a Soviet system already facing economic weakness and public discontent. A judgement must explain mechanisms and use evidence; it cannot derive weights from list length.

Follow the command, period and scope. Use particular evidence to explain a relationship, compare cases on a shared feature and qualify universal claims. Naming three effects is not automatically better than explaining one when one is requested. Non-alignment, inherited borders and the word “because” carry no automatic marks. Do not infer motives, outcomes or causal weights merely from a syllabus category.

Scope: local AP World History CED topics 8.1–8.9, PDF pages 151–160 (printed 144–153), including the economic-development and migration continuation on PDF page 157. Local 2024 set 2 SAQ 4 and official guidelines (QP PDF page 4; scheme pages 8–9) were read for political/economic decolonization factors and adoption of socialist policies. Local 2025 set 2 SAQ 4B and its scheme (QP PDF page 5; scheme page 8) were read for nuclear technology and international relations. The practice above is original, not an attributed released question.

College Board’s May 2027 update changes exam presentation while retaining course content and skills; older no-stimulus questions are demand evidence, not the current template. The U.S. National Archives’ Marshall Plan document and transcript supports the aid context and source-purpose exercise. The Nelson Mandela Foundation’s biography supplies the qualification about armed struggle in 1961. No invented quotation, full-mark guarantee, causal ranking or numerical loss estimate is used.