Imperialism and the Rise of American Power
Contents
By the mid-1890s, the American frontier—once the symbol of national expansion—was considered “closed” by many observers. The long march of Manifest Destiny, which had fueled westward settlement and annexation, had reached the Pacific.
Yet, the national appetite for expansion remained. Influenced by Social Darwinism, economic ambition, and growing global competition, the United States began to look beyond its continental borders. This marked a pivotal shift in U.S. foreign policy—from one centered on domestic concerns to one increasingly defined by overseas influence and imperial ambition.
The Spanish-American War: Turning Point in Foreign Policy
The Spanish-American War of 1898 signaled the United States’ arrival on the world stage as an imperial power. With European empires controlling vast colonies in Asia, Africa, and the Americas, many Americans saw overseas expansion as both a strategic necessity and a moral obligation. The war itself emerged from a combination of humanitarian concern, political opportunity, and media-driven hysteria.
Key Causes of the War:
- Cuban Revolution: Spain’s harsh response to Cuban efforts for independence gained widespread attention in the U.S., particularly as the Cuban struggle was framed as a fight for freedom—an echo of America’s own revolutionary past.
- Yellow Journalism: Newspapers led by William Randolph Hearst and Joseph Pulitzer competed for readers with sensationalized stories. Their exaggerated and often false reports of Spanish atrocities in Cuba stirred public emotion and bolstered support for intervention.
- The USS Maine Incident: In February 1898, the U.S. battleship Maine, stationed in Havana Harbor, exploded, killing over 260 Americans. Though the cause was never conclusively determined, the press and many political leaders blamed Spain, rallying the public with cries of “Remember the Maine!”
- Desire for Global Influence: Some U.S. leaders viewed war with Spain as a strategic opportunity to acquire overseas territories and gain access to new markets for American goods. The conflict offered a gateway to becoming a global economic and military power.
Territorial Gains and Expansion of U.S. Influence
Following the war, the Treaty of Paris (1898) formalized America’s new imperial holdings. The United States emerged with direct control of former Spanish colonies and extended its reach across the Pacific and the Caribbean.
Major U.S. Acquisitions:
- 1898:
- Hawaii annexed following a U.S.-supported coup against Queen Liliʻuokalani.
- Puerto Rico, Guam, and the Philippines ceded by Spain through the Treaty of Paris.
- 1899:
- Samoa and Wake Island acquired for naval bases and refueling stations.
- 1903:
- Panama Canal Zone secured after U.S. support for Panama’s independence from Colombia. Construction of the Panama Canal would follow, dramatically increasing global trade and military mobility.
- 1917:
- Virgin Islands purchased from Denmark to secure strategic Caribbean locations during World War I.
The Roosevelt Corollary and U.S. Dominance in Latin America
With growing power came a new approach to Latin America. Building on the principles of the Monroe Doctrine, President Theodore Roosevelt introduced the Roosevelt Corollary in 1904. While the Monroe Doctrine had warned European powers to stay out of the Western Hemisphere, the Corollary asserted the U.S. right to actively intervene in Latin American nations to stabilize economic or political instability.
This new policy justified a series of U.S. interventions across Latin America—including in the Dominican Republic, Nicaragua, and Haiti—solidifying U.S. dominance in the region and establishing it as a hemispheric power.
Frequently Asked Questions: American Imperialism
What is imperialism?
Imperialism is a policy in which a stronger nation extends its power and influence over other territories through military force, political control, or economic dominance. In the late 19th and early 20th centuries, the United States adopted imperialism to expand its global reach.
Why did the U.S. turn to imperialism in the late 1800s?
Several factors drove the shift, including:
- A belief that the American frontier was “closed”
- Economic interests in new markets and raw materials
- Strategic military considerations, especially for naval bases
- A desire to spread American values and institutions, influenced by ideas like Social Darwinism and the White Man’s Burden
What was the role of the Spanish-American War in U.S. imperialism?
The Spanish-American War was a turning point that marked America’s emergence as a global power. It led to the U.S. acquiring overseas territories such as Puerto Rico, Guam, and the Philippines, and demonstrated the country’s willingness to use military power abroad.
How did yellow journalism contribute to American imperialism?
Yellow journalism used exaggerated or false stories to influence public opinion. In the case of Cuba, sensationalized reports of Spanish cruelty increased support for U.S. intervention, helping to justify the Spanish-American War and America’s imperial expansion.
What was the Roosevelt Corollary, and how did it change U.S. foreign policy?
The Roosevelt Corollary (1904) expanded the Monroe Doctrine by asserting that the U.S. had the right to intervene in Latin America to maintain stability. It marked a shift from passive protection of the Western Hemisphere to active involvement in its affairs.
Was there opposition to U.S. imperialism?
Yes. Many Americans, including figures like Mark Twain and Andrew Carnegie, opposed imperialism. They formed the Anti-Imperialist League, arguing that imperialism violated American principles of self-government and freedom.
How did imperialism affect the countries the U.S. acquired or influenced?
In many cases, U.S. control led to economic development and modernization, but also resistance and conflict. For example, the Philippine-American War (1899–1902) broke out after Filipino revolutionaries opposed U.S. rule. Other areas, like Puerto Rico and Guam, remain U.S. territories today.