Why did the United States become an imperial power around 1900?

The drive came from several causes: the need for new markets and raw materials for industry, the desire for a powerful navy and overseas bases, national prestige in competition with European empires, and a sense of mission to spread civilization. The Spanish-American War (1898) brought overseas territories, and the United States projected power through the Open Door Policy in China and the Roosevelt Corollary asserting a right to intervene in Latin America. Anti-imperialists argued that ruling others without their consent betrayed the Declaration of Independence.

Why did the United States enter World War I and then reject the peace?

The United States began neutral but entered in 1917 after German unrestricted submarine warfare sank ships carrying Americans and the Zimmermann Telegram revealed a German attempt to ally with Mexico against the United States. President Wilson proposed an idealistic peace, the Fourteen Points, centered on a League of Nations. But the Senate rejected the Treaty of Versailles, fearing the League would drag the country into future wars, so the United States never joined the League and turned back toward isolationism.

What did Schenck v. United States establish?

Schenck v. United States (1919) established the 'clear and present danger' test: the First Amendment does not protect speech that creates a clear and present danger of serious harm the government has a right to prevent, especially in wartime. The Court upheld the conviction of a man who urged resistance to the draft under the Espionage Act. The case is the exam's anchor for the Enduring Issue of national security versus civil liberties, alongside Lincoln's habeas corpus suspension and Japanese internment.

How do you write the Part II Set 2 short essay?

The Set 2 short essay gives you two documents and asks for two components. First, describe the historical context, the era around the documents. Second, analyze how the audience, purpose, point of view, or bias of one document affects its reliability as evidence. Identify who made it and why, who it was for, and what bias it carries, then explain how that shapes reliability. A key nuance: a biased source is still useful for a different question (a propaganda poster is poor evidence of what war was like but strong evidence of government persuasion). Two or three tight paragraphs, scored 0 to 5.

New YorkUS History

NY Regents US History and Government Module 4: a complete overview of imperialism, World War I, and the 1920s

Q: What does Module 4 of the US History and Government Regents cover?

Module 4 covers the emergence of the United States as a world power: American imperialism and the Spanish-American War (1898), which brought Puerto Rico, Guam, the Philippines, and control of Cuba; World War I, including why the United States abandoned neutrality, Wilson's Fourteen Points, and the Senate's rejection of the Treaty of Versailles and the League of Nations; the home front and the restriction of civil liberties (the Espionage and Sedition Acts, Schenck v. United States, the first Red Scare); and the 1920s, a decade of prosperity, the Harlem Renaissance, and deep social tension. It also covers the Part II Set 2 sourcing short essay.

A deep-dive guide to Module 4 of the New York US History and Government Regents: American imperialism and the Spanish-American War, World War I and US entry, the home front and civil liberties (Schenck v. United States), the contradictions of the 1920s, and how to write the Part II Set 2 sourcing short essay.

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What Module 4 actually demands
Imperialism
World War I
The home front and civil liberties
The 1920s
The Part II Set 2 sourcing short essay
Check your knowledge

What Module 4 actually demands

Module 4 is the story of the United States stepping onto the world stage and wrestling with what global power meant for its own ideals. Two threads dominate: the Enduring Issue of interconnectedness (the swing between involvement and isolation), and the recurring tension between national security and civil liberties, which the exam tests through landmark cases. The module ends with the exam-skill that pairs naturally with this content: judging the reliability of sources, the Set 2 short essay.

This guide ties together the matching dot-point pages, each with its own worked questions: imperialism and the Spanish-American War, World War One and US entry, the home front and civil liberties in wartime, the 1920s: prosperity and tension, and sourcing and document reliability.

Imperialism

The industrial United States looked outward for markets, naval power, and prestige. The Spanish-American War (1898) brought Puerto Rico, Guam, the Philippines, and control of Cuba; Hawaii was annexed too. Anti-imperialists objected that ruling others without consent betrayed the Declaration. The United States projected power through the Open Door Policy and the Roosevelt Corollary.

World War I

Neutral at first, the United States entered in 1917 after unrestricted submarine warfare and the Zimmermann Telegram. Wilson's Fourteen Points proposed a League of Nations, but the Senate rejected the Treaty of Versailles, so the United States never joined and turned to isolationism.

The home front and civil liberties

The war brought mobilization, propaganda, and the Great Migration. It also restricted free speech through the Espionage and Sedition Acts, upheld in Schenck v. United States (1919) with the "clear and present danger" test, and the first Red Scare, the recurring security-versus-liberty Enduring Issue.

The 1920s

A decade of prosperity (consumer goods, installment credit, mass media) and the Harlem Renaissance, but also nativism (immigration quotas, 1924), the Red Scare, the revived Klan, and the clash of traditional and modern values (the Scopes Trial, Prohibition). The fragile, uneven boom helped set up the Depression.

The Part II Set 2 sourcing short essay

Describe the historical context, then analyze how the audience, purpose, point of view, or bias of one document affects its reliability. Remember the nuance: a biased source is still reliable evidence for a different question. Two or three tight paragraphs, scored 0 to 5.

Module 4 of the US History and Government Regents covers the United States as a world power: imperialism and the Spanish-American War (1898), which brought Puerto Rico, Guam, the Philippines, and Cuba, plus the Open Door and Roosevelt Corollary; World War I, US entry (submarine warfare, the Zimmermann Telegram), Wilson's Fourteen Points, and the Senate's rejection of the Treaty of Versailles and the League of Nations; the home front (mobilization, propaganda, the Great Migration) and the restriction of civil liberties (the Espionage and Sedition Acts, Schenck v. United States and the clear-and-present-danger test, the first Red Scare); and the 1920s, with consumer prosperity and the Harlem Renaissance alongside nativism, immigration quotas, and the clash of traditional and modern values. It also covers the Part II Set 2 sourcing short essay. The recurring Enduring Issues are interconnectedness and national security versus civil liberties.

Check your knowledge

A mix of recall and application questions covering Module 4. Attempt them under timed conditions, then check against the solutions.

State two territories the United States gained from the Spanish-American War. (2 marks)
Explain the anti-imperialist argument against empire. (2 marks)
State two reasons the United States entered World War I. (2 marks)
Explain why the Senate rejected the Treaty of Versailles. (2 marks)
State the test established by Schenck v. United States. (2 marks)
Explain the security-versus-liberty conflict in World War I. (2 marks)
Explain why the National Origins Act (1924) is described as nativist. (2 marks)
State the significance of the Harlem Renaissance. (2 marks)
State the second component of the Part II Set 2 short essay. (2 marks)

Solutions

Q1: Any two of: Puerto Rico, Guam, the Philippines (plus control of Cuba).
Q2: That ruling other peoples without their consent violated the American principle of self-government and the Declaration of Independence.
Q3: Any two of: German unrestricted submarine warfare; the Zimmermann Telegram; economic and cultural ties to the Allies.
Q4: Many senators feared joining the League of Nations would drag the United States into future European wars and limit its independence.
Q5: The "clear and present danger" test: speech that creates a clear and present danger of serious harm is not protected, especially in wartime.
Q6: The government argued that limiting antiwar speech protected the war effort, while critics argued it violated the First Amendment; the recurring tension between national security and civil liberties.
Q7: It set immigration quotas favoring Northern and Western Europe and sharply limiting Southern and Eastern Europeans and Asians, reflecting hostility to those groups.
Q8: A flowering of African American literature, art, and jazz that celebrated Black culture and gave African American artists a national voice.
Q9: Analyzing how the audience, purpose, point of view, or bias of a document affects its reliability as a source of evidence.

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)