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  1. World War I: Summary, Causes & Facts | HISTORY

    Oct 29, 2009 · World War I started in 1914, after the assassination of Archduke Franz Ferdinand, and ended in 1918. During the confl...

  2. World War I: Causes and Timeline | HISTORY

    World War I was fought from 1914 to 1918. Learn more about World War I combatants, battles and generals, and what cau...

  3. World War I Timeline: Battles & Major Events | HISTORY

    Apr 8, 2021 · This World War I timeline of battles outlines the most important engagements of the 1914-1918 war, from the first Bat...

  4. 8 Events that Led to World War I - HISTORY

    Apr 6, 2021 · Imperialism, nationalistic pride and mutual alliances all played a part in building tensions that would erupt into war.

  5. Why Did the US Enter World War I? | HISTORY

    Apr 6, 2017 · The United States entered World War I in 1917, following the sinking of the British ocean liner Lusitania and the sho...

  6. In 1916, German Terrorists Launched an Attack on American Soil

    Jul 29, 2016 · An explosion that initially looked like an accident, turned out to be an act of sabotage.

  7. Why Was the Battle of the Somme So Deadly? - HISTORY

    May 1, 2018 · The Battle of the Somme was one of the largest battles of World War I, and among the bloodiest in all of human history.

  8. John J. Pershing - HISTORY

    Oct 29, 2009 · U.S. Army general John J. Pershing (1860-1948) commanded the American Expeditionary Force (AEF) in Europe during Worl...

  9. How Harlem Hellfighter Henry Johnson Earned His WWI Medal of Honor

    Jun 2, 2015 · Private Henry Johnson, a member of the all-black unit known as the “Harlem Hellfighters,” used a rifle, a knife and h...

  10. How Imperialism Set the Stage for World War I | HISTORY

    Mar 7, 2022 · Many of the powers in World War I were competitive in overtaking territories in Europe and Africa.