Annexation of the Philippines & Anti-Imperialism

Active learning works well for this topic because students often absorb the celebratory narrative of the Spanish-American War without examining its violent consequences. By engaging with debates, primary sources, and public opinion, students confront the human and moral costs of imperialism, which textbooks sometimes overlook.

• 11th Grade
• US History
• 4 activities
• 35 min–50 min

Learning Objectives

1. Analyze the primary motivations behind American imperialism in the Philippines following the Spanish-American War.
2. Compare and contrast the core arguments presented by the Anti-Imperialist League and proponents of annexation.
3. Evaluate the human cost of the Philippine-American War, citing specific examples of brutality and civilian impact.
4. Synthesize primary source documents to construct a persuasive argument for or against the annexation of the Philippines.
5. Explain the long-term geopolitical and economic consequences of American control over the Philippines.

Structured Academic Controversy

⏱ 50 min·Pairs

Structured Academic Controversy: Should the U.S. Have Annexed the Philippines?

Pairs take assigned positions, either imperialist or anti-imperialist, using primary source excerpts from Lodge, Mahan, Twain, and Filipino leader Emilio Aguinaldo. After presenting both sides, pairs drop their assigned positions and work toward a reasoned consensus statement, distinguishing political, economic, and ethical arguments.

Prepare & details

Analyze the causes and brutality of the Philippine-American War.

Facilitation Tip: During the Structured Academic Controversy, assign roles (e.g., constitutional scholar, military strategist) to push students beyond rehearsed arguments and into deeper analysis of annexation.

Setup: Pairs of desks facing each other

Materials: Position briefs (both sides), Note-taking template, Consensus statement template

• Analyze
• Evaluate
• Create
• Social Awareness
• Relationship Skills

Mock Trial

⏱ 35 min·Small Groups

Primary Source Analysis: Mark Twain's War Writings

Students read Twain's 'To the Person Sitting in Darkness,' analyzing his rhetorical strategies and specific evidence against annexation. Discussion focuses on how literary figures shape public opinion and why Twain's anti-imperialist writing was suppressed during his lifetime and excluded from his authorized biography.

Prepare & details

Compare the arguments of imperialists and anti-imperialists regarding the annexation of the Philippines.

Facilitation Tip: When analyzing Mark Twain’s writings, ask students to highlight contradictions between his earlier pro-war statements and later anti-imperialist views to reveal the complexity of his stance.

Setup: Desks rearranged into courtroom layout

Materials: Role cards, Evidence packets, Verdict form for jury

• Analyze
• Evaluate
• Create
• Decision-Making
• Social Awareness

Case Study Analysis

⏱ 40 min·Small Groups

Case Study Analysis: Senate Investigation of the Philippine War

Present students with documented accounts of U.S. Army conduct in the Philippines, including the Senate investigation testimony of 1902. Students evaluate the primary source evidence and then connect the tactics used in the Philippines to those used in the Indian Wars a generation earlier, identifying continuities in U.S. military policy toward civilian populations.

Prepare & details

Evaluate the long-term consequences of American imperialism for both the U.S. and its new territories.

Facilitation Tip: For the Senate Investigation Case Study, have students compare testimonies from military leaders and Filipino civilians to contrast official accounts with lived experiences.

Setup: Groups at tables with case materials

Materials: Case study packet (3-5 pages), Analysis framework worksheet, Presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Gallery Walk

⏱ 35 min·Pairs

Gallery Walk: Editorial Cartoons and Public Opinion

Post a selection of pro-imperialist and anti-imperialist editorial cartoons from 1898 to 1902. Students annotate each for its argument and visual rhetoric, then map the full set onto an opinion spectrum. Discussion examines how each side framed Filipino people and what assumptions underlie both imperialist and anti-imperialist positions.

Prepare & details

Analyze the causes and brutality of the Philippine-American War.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Teaching This Topic

Experienced teachers approach this topic by framing it as a debate about power and ethics rather than a simple expansion of democracy. Avoid presenting the Philippine-American War as a footnote; instead, center it as the defining conflict of U.S. imperialism. Research shows that students engage more deeply when they see anti-imperialists as principled critics rather than isolationists, so emphasize the diversity of their arguments.

What to Expect

Successful learning looks like students analyzing conflicting viewpoints, questioning assumptions, and recognizing the complexity of imperialism rather than accepting simplified narratives. They should also connect historical events to modern discussions about foreign policy and human rights.

Watch Out for These Misconceptions

Common Misconception

During the Structured Academic Controversy, students may assume the Spanish-American War was a straightforward victory that expanded American democracy.

What to Teach Instead

During the Structured Academic Controversy, direct students to read casualty data from the Philippine-American War and Senate testimony about civilian deaths to challenge the celebratory framing and focus on the human costs of annexation.

Common Misconception

During the Primary Source Analysis of Mark Twain’s writings, students may label all anti-imperialists as isolationists who opposed any overseas engagement.

What to Teach Instead

During the Primary Source Analysis, have students categorize Twain’s arguments into constitutional, moral, and economic concerns to show that anti-imperialists supported selective engagement, not total isolation.

Common Misconception

During the Gallery Walk of editorial cartoons, students may assume Filipino people simply accepted American rule after centuries of Spanish colonialism.

What to Teach Instead

During the Gallery Walk, point students to cartoons depicting Filipino resistance or declarations of independence to highlight that annexation was met with organized opposition, not passive acceptance.

Assessment Ideas

Discussion Prompt

After the Structured Academic Controversy debate, collect opening statements and rebuttals to assess how well students integrated primary sources into their arguments and addressed counterpoints.

Quick Check

During the Primary Source Analysis of Mark Twain’s writings, circulate the room to listen for students identifying the author’s stance and textual evidence to confirm their ability to read nuanced political commentary.

Exit Ticket

After the Gallery Walk, collect index cards with students’ summaries of the Anti-Imperialist League’s main argument and one reason the Philippine-American War was brutal for Filipinos to gauge their grasp of key themes.

Extensions & Scaffolding

• Challenge: Ask students to draft a speech from the perspective of a Filipino revolutionary responding to U.S. annexation claims.
• Scaffolding: Provide sentence stems for the Structured Academic Controversy, such as “One reason for annexation was ____, but this overlooks ____.”
• Deeper exploration: Have students research the long-term effects of U.S. colonial rule on the Philippines, such as economic policies or language policies, and present findings in a mini-lesson.

Key Vocabulary

Imperialism	A policy or ideology of extending a country's rule over foreign nations, often by military force or by gaining political and economic control.
Annexation	The act of acquiring territory and incorporating it into an existing political unit, such as a city or country.
Insurgent	A person who rises in forcible opposition against an established government or authority, often engaging in guerrilla warfare.
Self-determination	The principle that peoples have the right to freely choose their sovereignty and international political status without external compulsion or interference.
Reconcentration camps	Camps established by military forces where civilians were rounded up and confined, often under harsh conditions, to separate them from insurgent forces.