How and why did the United States emerge as an imperial world power around 1900?
Explain the rise of American imperialism: the causes, the Spanish-American War, the acquisition of overseas territories, the debate over imperialism, and policies such as the Open Door and the Roosevelt Corollary (NYS Framework 11.6, geographic reasoning; interconnectedness).
A Framework-level answer on American imperialism for the New York US History and Government Regents: the causes of expansion overseas, the Spanish-American War and the territories gained, the debate between imperialists and anti-imperialists, and policies such as the Open Door and the Roosevelt Corollary.
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What this topic is asking
The Framework wants the United States' transformation into an imperial world power around 1900: the causes of overseas expansion, the Spanish-American War (1898) and the territories it produced, the debate between imperialists and anti-imperialists, and the new foreign policies (Open Door, Roosevelt Corollary). The leading Social Studies Practice is geographic reasoning, and the central Enduring Issue is interconnectedness (and power).
Why the United States expanded
The Spanish-American War
The debate over imperialism
The new empire divided Americans:
- Imperialists argued expansion brought economic benefits (markets, resources), strategic advantage (naval bases), and prestige, and framed it as a civilising mission.
- Anti-imperialists argued that ruling other peoples without their consent contradicted the founding principle of self-government and the Declaration of Independence, and warned against entanglement and the costs of empire (a brutal war to suppress Filipino independence followed).
This debate is the Enduring Issue of ideas and beliefs (self-government) colliding with power.
Asserting global power
The United States projected its new power through policy:
- The Open Door Policy (1899 to 1900) demanded that all nations have equal trading access to China, protecting American commercial interests.
- The Roosevelt Corollary (1904) to the Monroe Doctrine asserted a US right to intervene in the affairs of Latin American nations to maintain stability, backed by Theodore Roosevelt's "big stick" diplomacy (and later "dollar diplomacy").
These policies show the Enduring Issue of interconnectedness: the United States was now a major player in global trade and politics.
Try this
Q1. State two territories the United States gained from the Spanish-American War. [2]
- Cue. Any two of: Puerto Rico, Guam, the Philippines (plus control of Cuba).
Q2. Explain the anti-imperialist argument against acquiring overseas territories. [2]
- Cue. That ruling other peoples without their consent violated the American principle of self-government and the Declaration of Independence.
Exam-style practice questions
Practice questions written in the style of NYSED exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Regents Jun 2022 (Part I MC, style)1 marksThe stimulus describes the United States in 1898 gaining control of Puerto Rico, Guam, and the Philippines after a war with Spain.
These acquisitions are best described as evidence that the United States had
(1) abandoned all foreign involvement
(2) become an imperial world power with overseas territories
(3) returned to a policy of isolation
(4) granted independence to all its colonies
Show worked answer →
A Part I stimulus-based multiple-choice question (1 point). Correct answer: (2).
Gaining overseas territories after the Spanish-American War (1898) marked the United States' emergence as an imperial world power. Reading the stimulus, control of distant territories, points to imperialism. Options (1), (3), and (4) are the opposite of what happened.
Regents Aug 2023 (Part III A CRQ, style)2 marksDocument: an excerpt from an anti-imperialist arguing that ruling other peoples without their consent contradicted the principles of the Declaration of Independence.
(a) Identify one argument made against American imperialism. (b) Explain one argument that supporters of imperialism made in favor of it.
Show worked answer →
A Part III A constructed-response question (CRQ), 2 points (1 per part).
(a) 1 point: that ruling other peoples without their consent violated the American principle of self-government and the Declaration of Independence.
(b) 1 point: any valid pro-imperialist argument: new markets and resources for American business, naval and strategic advantage, national prestige, or a sense of mission to spread civilization and Christianity.
Markers reward a genuine argument on each side, drawing the anti-imperialist case from the document.
Related dot points
- Explain US entry into World War I (neutrality, submarine warfare, the Zimmermann Telegram), Wilson's Fourteen Points, and the rejection of the Treaty of Versailles and the League of Nations (NYS Framework 11.6, causation; interconnectedness).
A Framework-level answer on World War I for the New York US History and Government Regents: why the United States abandoned neutrality (submarine warfare, the Zimmermann Telegram), Wilson's Fourteen Points, and why the Senate rejected the Treaty of Versailles and the League of Nations.
- Explain the World War I home front (mobilization, propaganda, the Great Migration) and the restriction of civil liberties (the Espionage and Sedition Acts, the Red Scare, and Schenck v. United States) (NYS Framework 11.6, civic participation; human rights).
A Framework-level answer on the World War I home front for the New York US History and Government Regents: mobilization and propaganda, the Great Migration, and the restriction of civil liberties through the Espionage and Sedition Acts and Schenck v. United States, with the first Red Scare.
- Explain the 1920s: economic prosperity and consumer culture, cultural change (the Harlem Renaissance, mass media), and social tension (immigration quotas, the Red Scare, nativism, the clash of traditional and modern values) (NYS Framework 11.6, economics; ideas and beliefs).
A Framework-level answer on the 1920s for the New York US History and Government Regents: the economic boom and consumer culture, the Harlem Renaissance and mass media, and the social tensions of immigration quotas, nativism, and the clash of traditional and modern values.
- Apply the technique for the Part II Set 2 short essay: describe the historical context of two documents and analyze how the audience, purpose, point of view, or bias of a document affects its reliability as evidence (NYS Framework, gathering, interpreting and using evidence; sourcing).
An exam-skills answer for the New York US History and Government Regents: how to write the Part II Set 2 short essay, describing historical context and analyzing how a document's audience, purpose, point of view, or bias affects its reliability as a source of evidence, scored on the 0 to 5 rubric.
- Explain the origins of the Cold War and the policy of containment (the Truman Doctrine, the Marshall Plan, NATO) and Cold War conflicts (the Berlin Airlift, the Korean War, the Cuban Missile Crisis) (NYS Framework 11.8, geographic reasoning; conflict).
A Framework-level answer on the Cold War for the New York US History and Government Regents: its origins in the rivalry between the United States and the Soviet Union, the policy of containment (the Truman Doctrine, the Marshall Plan, NATO), and key conflicts such as the Berlin Airlift, the Korean War, and the Cuban Missile Crisis.
Sources & how we know this
- New York State K-12 Social Studies Framework (Grade 11) — New York State Education Department (2016)
- United States History and Government (Framework) — New York State Education Department (2024)