The Canadian Encyclopedia — neutral, cited, updated
July 26, 2026Sources cited
Canadianwire.
Canada’s encyclopedia & explainer
HomePolitics & WorldUS PresidentHarry S. Truman
Politics & World • US President

Harry S. Truman

Harry S.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Harry S. Truman was the 33rd president of the United States, serving from 1945 to 1953. He became president after Franklin D. Roosevelt died and led the country through the end of World War II and the early Cold War. Truman is also known for decisions including the use of atomic bombs against Japan, the Truman Doctrine, and support for civil rights measures.

Early life and career

Truman was born in Lamar, Missouri, in 1884 and later worked in local politics before entering national office. He served as a judge in Jackson County, Missouri, and was elected to the U.S. Senate in 1934 for a term beginning in 1935.

Presidency

Truman became vice president in 1945 and assumed the presidency when Roosevelt died. His presidency is associated with wartime decision-making, the beginning of the Cold War, and major foreign-policy initiatives such as containment and postwar reconstruction.

Foreign policy

Truman’s administration shaped the early Cold War order through the Truman Doctrine, the Marshall Plan, NATO-era alliances, and the Berlin Airlift. He also oversaw U.S. involvement in the Korean War and recognized the state of Israel.

Domestic policy

At home, Truman supported the continuation of New Deal-era policies and promoted civil rights reforms, including desegregation of the armed forces. His presidency also managed the transition from wartime to peacetime economic conditions.

Legacy

Historians commonly rank Truman among the more significant U.S. presidents because of the scale of decisions made during and after World War II. He remains closely associated with decisive leadership and the phrase “The buck stops here!”

Key facts

  • Became president on April 12, 1945, after the death of Franklin D. Roosevelt.
  • Served two terms and left office on January 20, 1953.
  • Oversaw the final stages of World War II and the start of the Cold War.
  • Authorized the use of atomic bombs on Hiroshima and Nagasaki in 1945.
  • Advanced major postwar policies including the Truman Doctrine and the Marshall Plan.
🍁
Canadian context

Truman’s presidency shaped the postwar international order that affected Canada’s security and foreign policy, especially through the early Cold War, NATO-era alignment, and the Korean War.

Frequently asked questions

Who was Harry S. Truman?
Harry S. Truman was the 33rd president of the United States, serving from 1945 to 1953.
How did Truman become president?
He became president on April 12, 1945, after Franklin D. Roosevelt died while Truman was vice president.
What is Truman best known for?
He is best known for ending World War II as president, shaping early Cold War policy, and authorizing the atomic bombings of Hiroshima and Nagasaki.
What party was Truman part of?
He was a member of the Democratic Party.
Where and when was Truman born?
He was born on May 8, 1884, in Lamar, Missouri.
When did Truman die?
He died on December 26, 1972, in Kansas City, Missouri.

References

  1. Harry S. Truman Presidential Library and Museumhttps://www.trumanlibrary.gov/education/trivia/biographical-sketch-harry-truman
    Supports: Death date, burial location, and biographical overview.
  2. The White Househttps://georgewbush-whitehouse.archives.gov/history/presidents/ht33.html
    Supports: Birth date, death date, marriage, and presidency dates.
  3. Encyclopaedia Britannicahttps://www.britannica.com/biography/Harry-S-Truman
    Supports: Presidency dates, major wartime and Cold War policies, atomic bomb decision, birth and death details.
  4. United States Senatehttps://www.senate.gov/senators/FeaturedBios/Featured_Bio_Truman.htm
    Supports: Early life, Senate career, Truman Committee, and selection as Roosevelt's running mate.
  5. Miller Center, University of Virginiahttps://millercenter.org/president/truman/life-in-brief
    Supports: Presidency overview, domestic and foreign policy legacy, and historical ranking.
  6. United States Senatehttps://www.senate.gov/artandhistory/history/minute/Harry_S_Truman.htm
    Supports: Birth date and Senate entry.
  7. Library of Congresshttps://guides.loc.gov/harry-s-truman
    Supports: Senate service, vice presidency, presidency, and re-election in 1948.
  8. Truman Little White Househttps://www.trumanlittlewhitehouse.org/key-west/president-truman-biography
    Supports: Biography, World War II service context, and broad legacy claims.