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William McKinley

William McKinley (1843–1901) was the 25th president of the United States, serving from 1897 until his assassination in 1901.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated September 10, 2026|2 min read| Fact-checked

William McKinley (1843–1901) was the 25th president of the United States, serving from 1897 until his assassination in 1901. A Republican, he led the United States during the Spanish-American War and the period in which the country acquired overseas territories including Puerto Rico, Guam, and the Philippines. He was shot by anarchist Leon Czolgosz in Buffalo, New York, and died eight days later.

Early life and career

McKinley was born in 1843 in Niles, Ohio, and served in the Union Army during the American Civil War. He later built a political career in Ohio and in the U.S. House of Representatives.

Presidency

Elected president in 1896, McKinley governed during a period of economic recovery and rising American industrial power. His administration is especially associated with protective tariffs, the Spanish-American War, and territorial expansion.

Spanish-American War and expansion

Under McKinley, the United States went to war with Spain in 1898 and gained control of Puerto Rico, Guam, and the Philippines through the peace settlement. His presidency is often linked to the United States’ rise to global power.

Assassination and death

McKinley was shot by Leon Czolgosz while greeting visitors at the Pan-American Exposition in Buffalo, New York, in September 1901. He died eight days later and was succeeded by Theodore Roosevelt.

Key facts

  • McKinley was born in Niles, Ohio, and served as a Civil War veteran before entering national politics.
  • He served in the U.S. House of Representatives and later as governor of Ohio.
  • As president, he won reelection in 1900 after a period of economic recovery and wartime victory.
  • His administration oversaw the Spanish-American War and the United States’ emergence as an overseas imperial power.
  • He was fatally shot at the Pan-American Exposition in Buffalo in September 1901.
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Canadian context

McKinley’s presidency shaped the late-19th-century balance of power in North America and the wider Atlantic world, including U.S. trade and imperial policy that affected Canada’s economic and diplomatic environment.

Frequently asked questions

Who was William McKinley?
William McKinley was the 25th president of the United States, serving from 1897 to 1901.
What is McKinley best known for?
He is best known for leading the United States during the Spanish-American War and the resulting overseas territorial expansion.
How did McKinley die?
He was shot by anarchist Leon Czolgosz in Buffalo, New York, on September 6, 1901, and died eight days later.
What territories were gained during McKinley’s presidency?
The United States acquired Puerto Rico, Guam, and the Philippines after the Spanish-American War.
Who succeeded McKinley as president?
Theodore Roosevelt succeeded McKinley after his assassination.

References

  1. Encyclopaedia Britannicahttps://www.britannica.com/biography/William-McKinley
    Supports: Birth, presidency dates, Spanish-American War, territorial acquisitions, assassination, succession.
  2. White House Historical Associationhttps://www.whitehousehistory.org/bios/william-mckinley
    Supports: Birthplace, presidency, assassination, death date.
  3. Library of Congresshttps://guides.loc.gov/world-of-1898/william-mckinley
    Supports: Civil War service, congressional and gubernatorial career, election, war policy, death.
  4. The American Presidency Projecthttps://www.presidency.ucsb.edu/people/president/william-mckinley
    Supports: Dates in office and basic presidential chronology.
  5. Miller Center, University of Virginiahttps://millercenter.org/president/mckinley/life-in-brief
    Supports: Historical assessment of McKinley’s presidency and foreign policy significance.