4.3 The Spanish-American War, Hawaii, and the Philippines

Motivations and character: the official theme, not a battle list

Independent OpenExamPrep teaching treats this section as the exam's expansionism and imperialism unit. The job is to explain why policymakers reached for islands and what kind of empire they built—not only to name San Juan Hill. Motives traveled as a bundle. The character of the resulting imperialism was commercially aggressive, racially confident, militarily short against Spain, and then long and dirty against Filipino republicans. A republic that had told itself it did not do colonies suddenly administered millions of people who were not on a statehood path.

Turner, Mahan, markets, mission

Frederick Jackson Turner's 1893 address, after the 1890 census announced that a contiguous frontier line no longer existed, claimed that cheap land and westward movement had shaped American democracy. Expansionists treated the "closed frontier" as a psychological push toward overseas outlets. Turner is not a naval officer and not the author of the Open Door Notes. He is the frontier-closed motive.

Alfred Thayer Mahan's The Influence of Sea Power upon History, 1660–1783 (1890) told officers and politicians that national greatness required a battleship navy, coaling stations, and an isthmian canal. Mahan is the strategic-naval match. If a stem says capital ships, fueling bases, and a Central American canal as a single program, Mahan is the name.

Markets mattered to manufacturers facing glut after the 1890s depression. China, Latin America, and island entrepôts looked like customers and cable stops. This is the overproduction argument: empire as a sales territory, not only a flag.

Mission mixed Protestant evangelicalism, racial hierarchy, and a duty to "uplift." Josiah Strong's Our Country (1885) is the usual clerical text. After the war began, annexationists quoted Rudyard Kipling's "The White Man's Burden" (1899); anti-imperialists quoted the Declaration of Independence instead. Racial confidence was not a side dish. It was part of the character of this imperialism: English-speaking Protestants told themselves they could tutor "childlike" peoples.

Hawaii: overthrow first, annexation later

American missionaries' descendants and sugar planters dominated Hawaiian politics by the late nineteenth century. A reciprocity treaty (1875) and a Pearl Harbor naval lease (1887) bound the islands to U.S. markets and strategy. The McKinley Tariff (1890) removed the privileged status of Hawaiian sugar in the American market and sharpened planter interest in annexation. Queen Liliuokalani tried to restore royal authority under a new constitution. A planter-led Committee of Safety, aided by U.S. minister John L. Stevens and Marines from the USS Boston, overthrew her in January 1893.

President Grover Cleveland refused to annex a government born of that coup and tried, without success, to restore the queen. Annexation waited until 1898, when the Spanish-American War made a Pacific way-station look urgent. Congress used a joint resolution—the Newlands Resolution (July 7, 1898)—not a two-thirds treaty vote. Exam trap: 1893 is the overthrow; 1898 is annexation. Hawaii was not purchased from Spain in the Treaty of Paris.

Cuba, the Maine, and the yellow press

Cubans had fought Spain in the 1895–1898 independence war. Spanish reconcentration policy under General Valeriano Weyler and the sensational coverage of William Randolph Hearst's New York Journal and Joseph Pulitzer's New York World—the yellow press—heated U.S. opinion. The stolen de Lôme letter (February 1898), in which a Spanish diplomat sneered at McKinley, and the destruction of the USS Maine in Havana harbor on 15 February 1898 became war accelerants. Later inquiries have not produced courtroom-proof that Spain planted a mine; contemporaries still blamed Spain and shouted "Remember the Maine, to hell with Spain." Know both facts: the slogan that mattered in 1898, and the later uncertainty about the cause.

McKinley asked for force in April. Congress's Teller Amendment (20 April 1898), attached to the war resolutions, stated that the United States would not annex Cuba. Remember Teller as the anti-annexation pledge about Cuba only. It said nothing about Puerto Rico, Guam, or the Philippines.

War in two oceans

Commodore George Dewey destroyed the Spanish squadron in Manila Bay on 1 May 1898 without losing an American ship to enemy fire. Emilio Aguinaldo's Filipino forces, recently returned from exile with some American encouragement, already surrounded Manila on land. In the Caribbean, U.S. forces took Santiago de Cuba. Roosevelt's Rough Riders became the publicity story of the fight for the San Juan Heights, including Kettle Hill. An armistice came in August 1898. The conventional war against Spain was short. The argument over what to keep was not.

Treaty of Paris (1898) and the Platt sequel

The Treaty of Paris, signed 10 December 1898, ended the war with Spain:

• Spain recognized Cuban independence (U.S. military occupation continued).
• Spain ceded Puerto Rico and Guam.
• Spain ceded the Philippines for a $20 million payment.

The Senate ratified the treaty on 6 February 1899 after a bitter imperial debate. The recorded vote was 57 to 27, one vote above the two-thirds of the full Senate then required.

Cuba's "independence" was then fenced by the Platt Amendment (1901), which the United States required Cuba to write into its constitution and which also appeared in a 1903 treaty: limits on Cuban treaty-making and public debt, a U.S. right to intervene to preserve Cuban independence and order, and a naval lease that became Guantanamo Bay. Teller said the United States would not annex Cuba; Platt said the United States would still supervise Cuba. That pairing is one of the highest-yield traps in this chapter. Platt was abrogated in 1934 except for the naval-lease logic that still haunts Guantanamo—leave that aftermath alone unless a stem asks what Platt originally did.

The Philippine-American War and Aguinaldo

Filipino revolutionaries under Emilio Aguinaldo had already been fighting Spain and expected independence. Aguinaldo issued a declaration of independence on 12 June 1898. When the United States claimed sovereignty under the Paris treaty, war followed. Conventional dating starts the Philippine-American War on 4 February 1899, when fighting broke out around Manila. It became a guerrilla war with high Filipino civilian costs, U.S. reconcentration tactics, and torture scandals such as the "water cure." Official combat against Aguinaldo's republic is often closed with Roosevelt's 4 July 1902 proclamation; resistance, especially in Muslim Mindanao (the Moro wars), lasted longer.

Aguinaldo is essential to the character question. This was not a neat transfer of a vacant Spanish warehouse. It was conquest of a working independence movement, justified in Washington as tutelage and strategic necessity (Manila as a China-facing base). If a stem asks who led Filipino resistance to American annexation, Aguinaldo is the name. He did not command Dewey's squadron.

The Anti-Imperialist League and the Insular Cases

The American Anti-Imperialist League, organized in 1898 in Boston and then nationally, argued that ruling Filipinos without their consent violated the Declaration and the Constitution's republican premise. It would require a large standing army and a racial caste government. Members included Andrew Carnegie, Mark Twain, Jane Addams, the philosopher William James, and former president Cleveland. Carnegie even floated buying Filipino independence. They lost the 1900 electoral argument when McKinley defeated William Jennings Bryan, who also criticized imperialism (while remaining the silver Democrat of 1896 in many voters' minds).

Constitutional leftovers include the Insular Cases (beginning with Downes v. Bidwell, 1901). The Supreme Court held that full constitutional rights did not automatically follow the flag into unincorporated territories. "Does the Constitution follow the flag?" received a lawyer's answer: not all the way, not at once. Puerto Rico and the Philippines became laboratories of second-class territorial status. That is character again: legal doctrines that made empire administrable without promising statehood.

Exam traps: Hawaii 1893 versus 1898. Teller versus Platt. Treaty package is Puerto Rico, Guam, Philippines ($20 million)—not Cuban statehood, not the Canal Zone (1903), not Alaska (1867). Dewey is Manila Bay, 1 May 1898. Aguinaldo is Filipino resistance, not the Anti-Imperialist League's Boston founders. Yellow press heated opinion; it did not, by itself, write the Treaty of Paris. Mahan is navy-and-canal theory; Turner is frontier psychology; Strong is missionary ideology.