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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. 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.

  4. The United States officially enters World War I - HISTORY

    Feb 9, 2010 · When World War I erupted in 1914, President Woodrow Wilson pledged neutrality for the United States, a position that the vast majority of Americans favored. Britain, however, …

  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. Armistice Day: World War I ends | November 11, 1918 | HISTORY

    Mar 10, 2010 · At the 11th hour on the 11th day of the 11th month of 1918, World War I ends. At 5 a.m. that morning, Germany signed ...

  7. What was the Zimmermann Telegram? - HISTORY

    May 21, 2014 · Most historians agree that American involvement in World War I was inevitable by early 1917, but the march to war was...

  8. Why World War I Ended With an Armistice Instead of a Surrender

    Oct 31, 2018 · On the 11th hour of the 11th day of the 11th month of 1918, fighting in World War I halted-but it would not be until ...

  9. Life in the Trenches of World War I - HISTORY

    Apr 23, 2018 · Trenches—long, deep ditches dug as protective defenses—are most often associated with World War I, and the results of trench warfare in that conflict were hellish indeed.

  10. How the Sinking of Lusitania Changed World War I | HISTORY

    Apr 17, 2018 · A German U-boat torpedoed the British-owned steamship Lusitania, killing 1,195 people including 123 Americans, on May...