The closing frontier: an argument, not an order to expand
Explain the significance of the 1890 census frontier announcement and Turner’s 1893 argument while retaining Indigenous peoples and alternative American choices.
Exam scope and assessment notes
Eighteen introductory lessons and 54 explained tasks address revised International AS enquiry 7.1: motives, direct and indirect government, Barth, Livingstone, Stanley, technology and science, Suez, boundaries, Congo exploitation, Christianity, education, healthcare, infrastructure and resistance in the Anglo-Zulu War, Ndebele rebellion, Adwa and Herero and Nama histories. Two selected comparison workshops use labelled original paraphrases of identified primary passages, not quotations or complete authentic source sets. This is introductory teaching, not verified full historical or assessment coverage and not full AS or A Level preparation. Twenty-six further lessons and 78 explained tasks introduce enquiry 7.2: Berlin and its coastal occupation, recognition, anti-slavery, trade and navigation provisions; Weltpolitik, fleet laws and risk theory, Dreadnought, South African tensions, Fashoda, changing British partnerships, the Entente, the Moroccan crises, Algeciras, the November 1911 convention, imperial extent, alignment and contemporary views. Three further selected source comparisons distinguish obligations from implementation, diplomatic support from consultation and automatic military commitment, and advocacy from critique. These are introductions, not verified full historical or assessment coverage. Twenty-two further lessons and 66 explained tasks introduce enquiry 7.3: controlled foreign contacts, Perry, unequal treaties and revision; Meiji central government, revenue and conscription; industry, technological adaptation and education; Korea, the 1895 settlement, the conditional 1902 alliance and the Russo-Japanese War; Portsmouth; wartime Pacific occupations and global naval cooperation; the Twenty-One Demands, Chinese responses, Siberian intervention and Japan’s position by 1918. Three selected comparisons distinguish constitutional aims and provisions, outside recognition and Korean sovereignty, and public intervention assurances and actual conduct. These are introductory lessons, not verified full historical or assessment coverage. Twenty-seven further introductory lessons and 81 explained tasks address enquiry 7.4: the frontier debate, industrial resources and the Panic of 1893; Mahan, the Great White Fleet and Panama; Cuba, yellow journalism, Maine, the 1898 war and settlement, Teller and Platt, Dollar Diplomacy and Pacific expansion; Filipino independence, war and continuing resistance; neutrality, peace advocacy, submarine policy, the Zimmermann proposal, the war decision and intervention through 1918. Four selected comparisons distinguish treaty grants and policy arguments, independence and restrictions, protective claims and sovereignty, and a war request and a later defence of dissent. All four enquiries have introductory teaching, not verified full historical or assessment coverage. Deeper regional and African-source reading, subject-specialist review, full four-source sets, timed papers and calibrated marking remain unfinished. Existing 2026 teaching receives no automatic revised-year coverage credit. Imperialism and the emergence of world powers, c.1870–1918 belongs to International Paper 1 in 2027 and International Paper 2 in 2028 and 2029. Keep it separate from European and American alternatives and from the International Paper 4 Eastern Europe enquiry 7.1. Paper 1 Historical sources is 75 minutes and 40 marks: both parts of one question use four sources totalling at most 600 words, at least three written and up to one visual. Part (a) compares two sources for 15 marks; part (b) uses all four and contextual knowledge for a 25-mark judgement. Paper 2 Outline study is 105 minutes and 60 marks: answer two questions from one section, both parts of each, with a 10-mark causal explanation and a 20-mark argument. These lessons are not complete papers or calibrated assessment.
Before you begin
- Connect dated economic resources, strategic arguments, political decisions and implementation
- Distinguish American claims, local political authority, consent and practical outcomes; separate 1898, 1904, 1909–1913 and 1917
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
How should you explain America’s emergence as a world power?
What you will learn
- What did the 1890 frontier announcement describe?
- Why is Turner’s 1893 essay not a government expansion order?
- How far can the closing frontier explain overseas expansion?
Develop an International AS historical argument
- Write your own response before opening the model.
- Use a dated causal explanation, attribute policy arguments, retain Cuban, Filipino and Panamanian agency and compare intended aims with actual outcomes.
Eighteen introductory lessons and 54 explained tasks address revised International AS enquiry 7.1: motives, direct and indirect government, Barth, Livingstone, Stanley, technology and science, Suez, boundaries, Congo exploitation, Christianity, education, healthcare, infrastructure and resistance in the Anglo-Zulu War, Ndebele rebellion, Adwa and Herero and Nama histories. Two selected comparison workshops use labelled original paraphrases of identified primary passages, not quotations or complete authentic source sets. This is introductory teaching, not verified full historical or assessment coverage and not full AS or A Level preparation. Twenty-six further lessons and 78 explained tasks introduce enquiry 7.2: Berlin and its coastal occupation, recognition, anti-slavery, trade and navigation provisions; Weltpolitik, fleet laws and risk theory, Dreadnought, South African tensions, Fashoda, changing British partnerships, the Entente, the Moroccan crises, Algeciras, the November 1911 convention, imperial extent, alignment and contemporary views. Three further selected source comparisons distinguish obligations from implementation, diplomatic support from consultation and automatic military commitment, and advocacy from critique. These are introductions, not verified full historical or assessment coverage. Twenty-two further lessons and 66 explained tasks introduce enquiry 7.3: controlled foreign contacts, Perry, unequal treaties and revision; Meiji central government, revenue and conscription; industry, technological adaptation and education; Korea, the 1895 settlement, the conditional 1902 alliance and the Russo-Japanese War; Portsmouth; wartime Pacific occupations and global naval cooperation; the Twenty-One Demands, Chinese responses, Siberian intervention and Japan’s position by 1918. Three selected comparisons distinguish constitutional aims and provisions, outside recognition and Korean sovereignty, and public intervention assurances and actual conduct. These are introductory lessons, not verified full historical or assessment coverage. Twenty-seven further introductory lessons and 81 explained tasks address enquiry 7.4: the frontier debate, industrial resources and the Panic of 1893; Mahan, the Great White Fleet and Panama; Cuba, yellow journalism, Maine, the 1898 war and settlement, Teller and Platt, Dollar Diplomacy and Pacific expansion; Filipino independence, war and continuing resistance; neutrality, peace advocacy, submarine policy, the Zimmermann proposal, the war decision and intervention through 1918. Four selected comparisons distinguish treaty grants and policy arguments, independence and restrictions, protective claims and sovereignty, and a war request and a later defence of dissent. All four enquiries have introductory teaching, not verified full historical or assessment coverage. Deeper regional and African-source reading, subject-specialist review, full four-source sets, timed papers and calibrated marking remain unfinished. Existing 2026 teaching receives no automatic revised-year coverage credit.
Original teaching brief and analytical model
The opening brief is original StudyForA teaching prose, not a quotation or contemporary source. Imperialism and the emergence of world powers, c.1870–1918 belongs to International Paper 1 in 2027 and International Paper 2 in 2028 and 2029. Keep it separate from European and American alternatives and from the International Paper 4 Eastern Europe enquiry 7.1. Paper 1 Historical sources is 75 minutes and 40 marks: both parts of one question use four sources totalling at most 600 words, at least three written and up to one visual. Part (a) compares two sources for 15 marks; part (b) uses all four and contextual knowledge for a 25-mark judgement. Paper 2 Outline study is 105 minutes and 60 marks: answer two questions from one section, both parts of each, with a 10-mark causal explanation and a 20-mark argument. These lessons are not complete papers or calibrated assessment.
StudyForA teaching brief · original prose · The closing frontier: an argument, not an order to expand
[1] Original analytical teaching prose, not a quotation or contemporary source. Explain the significance of the 1890 census frontier announcement and Turner’s 1893 argument while retaining Indigenous peoples and alternative American choices.
1. How far can the closing frontier explain overseas expansion?
Compare after trying
The closing frontier helps explain a change in the language of American opportunity more convincingly than it explains a complete foreign policy. The 1890 census announcement concerned a settlement pattern; Turner’s 1893 essay gave the frontier a formative role in national development. An expansionist could use concern about its ending to argue that opportunities should now be sought overseas.
That argument requires important qualifications. A census category was not a declaration that Indigenous peoples no longer existed, and Turner’s essay was not an executive instruction. Neither supplied the ships, funds, political support or diplomatic circumstances required for an overseas acquisition. It is therefore necessary to follow ideas into the choices of particular policymakers rather than infer a direct command from a historical interpretation.
The frontier debate belongs within an explanation that also considers industrial resources, naval strategy and specific international crises. It could make an overseas programme seem attractive or legitimate to some advocates while leaving other Americans unconvinced. Its strongest explanatory role is as a contested justification and source of anxiety about future opportunity, rather than a sufficient cause of every expansionist action.
Why this response fits
- Develop a reasoned judgement using dated and relevant evidence.
- Compare motives, means and outcomes; distinguish outside agreement and local consent.
- This original model is not an authentic source, calibrated examination script or Cambridge grade.
Distinguish a census category from an empty continent
The announcement associated with the 1890 census concerned the difficulty of tracing a continuous frontier line of settlement. It did not mean that every acre had been occupied, that migration had ended or that Indigenous peoples had disappeared. Calling land unsettled reflected a settler classification. A historian must ask whose presence, landholding and political authority that language made less visible.
Identify Turner’s interpretation
In 1893 Frederick Jackson Turner presented an argument that westward settlement had helped shape American institutions and identity. This was a historical interpretation, written from a particular position, rather than a government instruction to acquire islands. Its importance lies partly in the questions it raised about the future when an allegedly formative frontier was said to be ending. Description of an argument is not endorsement of its assumptions.
Explain a possible foreign-policy connection
An expansionist could argue that overseas markets, strategic positions or new outlets offered opportunities beyond the continental frontier. To demonstrate influence, however, an answer must connect that argument with identifiable advocates and decisions. The disappearance of a census line did not itself create a navy, finance an expedition or secure congressional agreement. Domestic development and overseas commerce without annexation remained conceivable alternatives.
Test the strength of the explanation
Use the frontier debate as one part of a causal account alongside economic capacity, strategic ideas and particular crises. A belief about national destiny can help justify a policy without fully causing it or representing every citizen. Indigenous histories also continue across the 1890 boundary. For enquiry 7.4 this is introductory preparation: the wars of 1898 and 1899–1902 and the reasons for intervention in 1917 still require their own teaching.
Sources for this lesson
- Cambridge History 9489 · 2027–2029 · enquiry 7.4 pp. 31–32 · official Version 2 PDF retrieved; selected enquiry and rotation pages checked with the April 2025 update
- Cambridge History 9489 · 2027–2029 update · Version 2 changes, April 2025
- Frederick Jackson Turner, The Significance of the Frontier in American History, 1893 · primary historical argument reproduced by the American Historical Association; settler perspective, not a neutral survey of Indigenous experience
- Library of Congress · Rise of Industrial America, 1876–1900 · modern institutional overview and primary-source collection
- US Office of the Historian · Mahan’s The Influence of Sea Power upon History · retired retrospective institutional account; argument and adoption are separate
Pause and explain
Which explanation best fits this lesson?
Worked example
What did the 1890 frontier announcement describe?
Show the worked solution
- Identify the continuous settlement line.
- Explain what the category measured.
- Reject the inference of an empty continent.
Answer It described the difficulty of identifying a continuous frontier line of settlement. It did not establish that Indigenous peoples or their claims had vanished, or that all migration and domestic economic development had ended.
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.
Guided: What did the 1890 frontier announcement describe?
Give me a hint
Separate a mapped category from the people living on the land.
Compare my reasoning
- Identify the continuous settlement line.
- Explain what the category measured.
- Reject the inference of an empty continent.
It described the difficulty of identifying a continuous frontier line of settlement. It did not establish that Indigenous peoples or their claims had vanished, or that all migration and domestic economic development had ended.
Look for these in your work
- Uses dated evidence and explains a causal connection
- Distinguishes American policy arguments, practical capacity and the authority of affected societies
Independent: Why is Turner’s 1893 essay not a government expansion order?
Give me a hint
Identify the author’s role and the function of the text.
Compare my reasoning
- Date the interpretation.
- Identify its historical argument.
- Look for separate policy decisions.
Turner offered an interpretation of American development to a historical audience. Government decisions required political and institutional action; agreement with a frontier argument cannot be assumed to produce a particular annexation or war.
Look for these in your work
- Uses dated evidence and explains a causal connection
- Distinguishes American policy arguments, practical capacity and the authority of affected societies
Transfer: How far can the closing frontier explain overseas expansion?
Give me a hint
Connect a possible motive with the means and choices needed to act.
Compare my reasoning
- Explain the perceived loss of an outlet.
- Add economic and strategic conditions.
- Weigh alternatives and limits.
The frontier debate could encourage arguments for new overseas outlets and help justify expansion. It does not explain the means, timing or destination of every decision. Economic resources, naval arguments, political choices and particular crises are also needed; domestic alternatives and disagreement prevent a claim of inevitability.
Look for these in your work
- Uses dated evidence and explains a causal connection
- Distinguishes American policy arguments, practical capacity and the authority of affected societies
Common mistakes
- A census category does not erase Indigenous communities or sovereignty claims.
- Keep the 1890 announcement, the 1893 argument and later policy decisions separate.
What can you explain now?
Which explanation best fits this lesson?
Compare with the explanation
Treat the frontier debate as one contested influence alongside resources and decisions
The census category, Turner’s historical interpretation and a government decision are different kinds of evidence. A causal link needs identifiable actors and mechanisms.
After trying it yourself, choose your next review. This is your self-assessment.
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Make it stick
Which explanation best fits this lesson?
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.