9.1 American Imperialism and Expansionism

Motivations for American Imperialism

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Manifest Destiny and Divine Right

By the late 19th century, the idea of Manifest Destiny had evolved beyond its original scope. Initially, it referred to the belief that the United States had a God-given right to expand across North America. But after the frontier was declared "closed" in 1890, expansionists applied the same logic overseas. American culture, values, and institutions were seen as inherently superior and destined to spread, not just to the Pacific coast, but across the globe.

Economic and Strategic Interests

Rapid industrialization created a surplus of American goods that needed foreign buyers. At the same time, industries needed raw materials like rubber, tin, and sugar that couldn't be sourced domestically. These twin pressures pushed the U.S. to look outward.

Naval power was central to this strategy. Alfred Thayer Mahan, in his influential book The Influence of Sea Power upon History (1890), argued that national greatness depended on a powerful navy, a strong merchant marine, and overseas bases to support both. His ideas directly shaped U.S. policy:

• The U.S. modernized its navy, building steel warships to replace the aging wooden fleet
• The government pursued naval bases and coaling stations across the Pacific and Caribbean to refuel and resupply ships
• The Open Door Policy (1899-1900) sought equal trading access for all Western nations in China, ensuring the U.S. wouldn't be shut out of the lucrative Chinese market

The Spanish-American War of 1898 was the turning point. After a swift victory over Spain, the U.S. acquired Puerto Rico, Guam, and the Philippines. These territories gave the U.S. strategic military positions in both the Caribbean and the western Pacific.

Cultural Superiority and "White Man's Burden"

Imperialists also drew on racial and cultural arguments. The phrase "white man's burden" came from Rudyard Kipling's 1899 poem, which framed colonialism as a duty to "civilize" non-white peoples. Many Americans embraced this idea, believing they had a moral obligation to spread Christianity, Western education, and democratic institutions to supposedly "backward" societies.

Social Darwinism reinforced these views. Thinkers applied Charles Darwin's concept of natural selection to nations and races, arguing that competition among societies was natural and that the "fittest" civilizations would inevitably dominate weaker ones. This gave imperialism a veneer of scientific legitimacy.

The Panama Canal, completed in 1914, became a symbol of all these motivations at once. It served clear economic and military purposes by connecting the Atlantic and Pacific, cutting weeks off shipping routes. But it was also celebrated as proof of American engineering superiority and global ambition.

Factors Contributing to American Imperialism

Economic Interests and Industrialization

The connection between business and foreign policy was direct. American companies operating abroad actively lobbied the government for support:

• The United Fruit Company dominated Central American economies, controlling vast plantations and transportation networks. Its political influence was so extensive that countries like Guatemala and Honduras became known as "banana republics."
• Sugar planters in Hawaii pushed for annexation to avoid U.S. tariffs on foreign sugar imports, directly linking their profits to American territorial expansion.

These companies didn't just benefit from imperialism; they helped drive it, pressuring Washington to intervene militarily or diplomatically whenever their investments were threatened.

Political and Military Factors

The Spanish-American War represented a genuine shift in how Americans thought about their country's role in the world. Before 1898, the dominant tradition was to avoid entangling alliances and overseas commitments. After the war, a growing number of politicians and public figures argued that the U.S. had both the power and the responsibility to shape global affairs.

Public opinion played a role too. Yellow journalism, particularly the sensationalist reporting of William Randolph Hearst's New York Journal and Joseph Pulitzer's New York World, whipped up public outrage over Spanish atrocities in Cuba and built popular support for war. The mysterious sinking of the USS Maine in Havana Harbor in February 1898 became a rallying cry: "Remember the Maine!"

Impact of American Imperialism on Territories

Political and Social Changes

American control brought sweeping changes to acquired territories, though the results were often harsh for local populations:

• The Philippines: The U.S. promised to prepare Filipinos for self-governance but first had to crush a Filipino independence movement. The Philippine-American War (1899-1902) killed an estimated 200,000 to 300,000 Filipino civilians, many from disease and famine. American colonial authorities then imposed English-language education and American-style legal institutions.
• Hawaii: American sugar planters, backed by U.S. Marines, had overthrown Queen Liliuokalani in 1893. Formal annexation came in 1898. Native Hawaiian land rights were steadily eroded, and Hawaiian language and cultural practices were suppressed in schools.
• Puerto Rico and Guam: Both were placed under U.S. military governance initially. Puerto Ricans received U.S. citizenship through the Jones Act of 1917, but the island had no voting representation in Congress and limited self-governance.

Economic and Labor Impacts

• American companies in Central America benefited from favorable land deals, cheap labor, and the suppression of unions, often with the backing of U.S.-supported authoritarian governments.
• Construction of the Panama Canal relied heavily on West Indian laborers, particularly from Jamaica and Barbados. Workers faced brutal conditions, tropical diseases like malaria and yellow fever, and a racially segregated labor system that paid white American workers significantly more than non-white laborers.

Limitations on Sovereignty

The Platt Amendment (1901) is the clearest example of how the U.S. controlled nominally independent nations. Written into Cuba's constitution as a condition of U.S. withdrawal, it:

• Gave the U.S. the right to intervene in Cuban affairs to "preserve Cuban independence"
• Prohibited Cuba from signing treaties that might compromise its sovereignty to other foreign powers
• Granted the U.S. a permanent naval base at Guantanamo Bay

In practice, the amendment made Cuba a protectorate. The U.S. intervened militarily in Cuba multiple times in the early 20th century, and the Guantanamo base remains under U.S. control today.

Debates over American Imperialism

Anti-Imperialist Arguments

Not all Americans supported expansion. The Anti-Imperialist League, founded in 1898, brought together a diverse coalition including industrialist Andrew Carnegie, labor leader Samuel Gompers, social reformer Jane Addams, and writer Mark Twain. Their core arguments were:

• The Constitution did not authorize governing people without their consent. Ruling over foreign populations as colonial subjects contradicted the Declaration of Independence's principles.
• Imperialism would corrupt American democracy by creating a class of colonial subjects who had no political rights.
• The costs of maintaining an empire, both financial and moral, outweighed the benefits.

Mark Twain was one of the sharpest critics. His essay "To the Person Sitting in Darkness" (1901) used biting satire to expose the gap between America's stated ideals and its actual conduct in the Philippines, China, and South Africa.

William Jennings Bryan, the Democratic presidential candidate in 1900, made anti-imperialism a central campaign issue, arguing that the U.S. could not be both a republic and an empire.

Political Divisions and Dissent

The Philippine-American War became the focal point of domestic debate. Reports of American soldiers burning villages and using torture (including the "water cure," an early form of waterboarding) shocked the public and gave anti-imperialists powerful ammunition.

Woodrow Wilson later articulated a different vision of America's global role. His Fourteen Points (1918), presented near the end of World War I, emphasized self-determination for colonized peoples and the creation of international institutions to resolve disputes peacefully. While Wilson's record on imperialism was inconsistent (he intervened militarily in Latin America multiple times), his rhetoric marked a shift toward framing American power in terms of international cooperation rather than territorial conquest.

Concerns over Expansion of Federal Power

Some opponents of imperialism worried less about foreign peoples and more about what empire would do to the United States itself:

• Governing distant territories required a larger military and a more powerful executive branch, concentrating authority in ways that could erode checks and balances.
• The overthrow of Hawaii's monarchy troubled Americans who saw it as the U.S. doing exactly what it had rebelled against in 1776: imposing rule on people without their consent.
• Critics feared that a permanent military establishment needed to maintain overseas possessions would militarize American society and shift power away from Congress and toward the presidency.