Imperialism and the emergence of world powers, c.1870–1918
Compare the motives, methods and consequences of European imperial expansion with the distinct rise of Japan and the USA. Link domestic capacity and strategic choices to international relationships, and weigh imperial rivalry alongside other causes of tension by 1914.
Section Paper 1 · Historical Sources · 1 hour 15 minutes · 40 marks · 40% of AS / 20% of A Level
Exam scope and assessment notes
Cambridge lists International History 9982 for schools in the United States only. It is assessed in 2027–2029, with June AS/A Level and November AS-only series, subject to administrative-zone availability. Original StudyForA teaching and practice. This is not an official Cambridge coursebook, question paper, mark scheme or grade prediction. Historical interpretations and source scenarios written for practice are invented and must not be treated as authentic historical sources or named historians’ work. Use the current Cambridge syllabus, specimen materials and class sources; teacher review of extended responses remains important.
Before you begin
- Keep events within the syllabus dates and distinguish sequence from explanation.
- Use precise evidence and explain how it supports a historical argument.
- Compare perspectives without treating a group or country as politically uniform.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
Which approach best prepares for imperialism and the emergence of world powers, c.1870–1918?
What you will learn
- Why was imperialism a significant force in Africa from 1870?
- What was the impact of imperial expansion on international relations?
- Why did Japan emerge as a world power and what was the impact on international relations?
- Why did the USA emerge as a world power and what was the impact on international relations?
1.1 · African imperialism and its consequences
European expansion in Africa had economic motives, religious and cultural justifications such as the claimed ‘civilising mission’, and strategic competition between states. Colonial government varied between direct administration and indirect rule. Explorers such as Heinrich Barth, David Livingstone and Henry Morton Stanley, new technologies and the Suez Canal shaped access and imperial claims, but did not make expansion inevitable.
The Berlin Conference of 1884–85 accelerated the partition of Africa through rules including effective occupation. Colonial rule imposed borders that often disregarded existing communities and political systems. In the Congo, extraction involved coercion and severe abuse; elsewhere colonial governments also changed religion, education, health provision and infrastructure. African resistance had varied aims and outcomes: compare the Anglo-Zulu War, Ndebele rebellion, the Battle of Adwa, and the Herero War rather than treating resistance as one movement.
1.2 · Empire and international relations
At Berlin, Bismarck faced pressure to manage rival claims. The powers recognised Leopold’s Congo claim, agreed rules for effective occupation, and discussed free trade, navigation and ending the slave trade. These arrangements managed some disputes while legitimising further expansion; they did not end rivalry.
Anglo-German naval competition and tension over South Africa, Fashoda between Britain and France, and the Moroccan crises between France and Germany show how imperial disputes affected diplomacy. Britain’s end to ‘splendid isolation’, the Anglo-French Entente, Algeciras and the settlement of the Agadir crisis reduced some immediate tensions. By 1914, empire influenced strategic calculations and alliances, but its importance should be weighed alongside European security and domestic politics.
1.3 · Japan’s rise
Commodore Perry’s mission and unequal treaties exposed Japan to Western pressure. The Meiji Restoration enabled state-led reforms, industrialisation, new education and military adoption of Western technology. These changes helped Japan build capacity, but resources, leadership and strategic choices also mattered.
Japan pursued influence in Korea and gained diplomatic recognition through the Anglo-Japanese Treaty of 1902. Victory in the Russo-Japanese War of 1904–05 established Japan as a major power in international perceptions. During the First World War, Japan supported the Allies, seized German possessions in the Pacific and intervened in the Russian Civil War. Assess how these actions expanded influence while creating new regional tensions.
1.4 · The USA’s rise
The closing of the frontier, economic growth, naval ideas associated with Alfred Thayer Mahan and construction of the Great White Fleet contributed to a more outward-looking policy. The Panama Canal strengthened strategic reach. Economic change was uneven, as the Panic of 1893 illustrates.
The Spanish–American War of 1898 reflected US interests in the Caribbean and Pacific, sensational reporting and the destruction of the Maine; the Philippine–American War exposed the conflict between claims about liberation and US expansion, as well as Filipino resistance. Taft’s Dollar Diplomacy used economic influence. In 1917, German submarine warfare, the Lusitania, the Zimmermann Telegram, relations with the Allies, Wilson’s policy and anti-war pressure shaped entry into the First World War. Explain both the decision and the consequences of US intervention.
Sources for this lesson
Pause and explain
What should a strong judgement about imperialism and the emergence of world powers, c.1870–1918 do?
Worked example
How far did imperial rivalry make a general European war more likely by 1914?
Show the worked solution
- Define what ‘more likely’ means: creating disputes, hardening alliances or directly causing a crisis.
- Compare Anglo-German, Fashoda and Moroccan tensions with the later settlement of some disputes.
- Weigh imperial rivalry against Balkan conflict, military planning and decisions in 1914.
Answer Imperial rivalry increased mistrust and affected alignments, especially in the Anglo-German naval contest and the Moroccan crises. Yet Britain and France resolved disputes through the Entente, Algeciras and the Agadir settlement. Empire therefore contributed to a climate of competition but did not by itself make war inevitable; Balkan instability, military calculations and leaders’ decisions were more immediate in 1914.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
Did imperial rivalry make war in Europe inevitable by 1914?
Give me a hint
Separate contribution from inevitability; compare rivalry with evidence of diplomacy and other causes.
Compare my reasoning
- Identify how imperial disputes affected trust and alignments.
- Use one example of rivalry and one example of a diplomatic settlement.
- Compare with Balkan tension and decisions during the 1914 crisis.
Imperial disputes contributed to mistrust: the naval rivalry and Morocco crises affected relations among major powers. However, Britain and France settled several disputes, so rivalry did not make war inevitable. Balkan instability and decisions during the July Crisis were more immediate. A balanced judgement is that imperialism increased tension but was one factor among several.
Look for these in your work
- Uses syllabus evidence
- Explains a causal or comparative link
- Keeps the response within the topic and period
Compare how Japan and the USA became world powers before 1918.
Give me a hint
Use a shared criterion such as state capacity, military reach and diplomatic recognition.
Compare my reasoning
- Explain Japan’s Meiji reforms and military development.
- Compare US economic and naval growth and overseas interventions.
- Judge how the 1902 alliance, Russo-Japanese War and First World War changed each country’s standing.
Both states combined economic growth with stronger military and diplomatic reach. Japan’s state-led Meiji reforms supported modernisation; victory over Russia in 1904–05 and the 1902 Anglo-Japanese Treaty signalled recognition. The USA’s larger industrial base, navy, canal and Caribbean-Pacific interventions extended its reach, and entry into the First World War in 1917 increased its influence. Their paths differed: Japan’s rise centred on East Asia, while US influence grew across the Americas and Pacific before becoming global.
Look for these in your work
- Compares relevant factors
- Supports analysis with precise examples
- Reaches a qualified judgement
Original practice claim: ‘The building of a canal alone makes a country a world power.’ Evaluate it using the USA’s Panama Canal and another factor from this topic.
Give me a hint
Distinguish a strategic tool from the economic, political and military capacity needed to use it.
Compare my reasoning
- Explain how the Panama Canal affected US movement and strategy.
- Compare its effect with naval capacity, economic growth or diplomacy.
- Decide whether the canal was a cause, an instrument, or both.
The Panama Canal improved US movement between oceans and supported trade and naval strategy, but a canal alone cannot create industrial resources, military capacity or diplomatic influence. Economic growth and naval development gave the USA the ability to use that route. The canal was an important instrument of power and a sign of strategic ambition, not a sufficient cause by itself.
Look for these in your work
- Tests a claim against evidence
- Considers another perspective or limitation
- Explains a balanced conclusion
Common mistakes
- Treating the Scramble for Africa as a single-motive process
- Assuming imperial rivalry made war inevitable
- Describing Japan’s and the USA’s rise as identical
- Confusing colonial outcomes with the aims claimed by imperial powers
What can you explain now?
Why was imperialism a significant force in Africa from 1870?
Compare with the explanation
What was the impact of imperial expansion on international relations?
Compare the motives, methods and consequences of European imperial expansion with the distinct rise of Japan and the USA. Link domestic capacity and strategic choices to international relationships, and weigh imperial rivalry alongside other causes of tension by 1914.
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Recall a precise example relevant to why was imperialism a significant force in africa from 1870?, explain why it matters, and state one limitation or alternative explanation.
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