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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. The WWI Origins of the Poppy as a Remembrance Symbol

    May 25, 2017 · The Remembrance Day symbolism of the poppy started with a poem written by a World War I brigade surgeon who was struck by the sight of the red flowers growing on a …

  7. 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 ...

  8. The Assassination of Archduke Franz Ferdinand | HISTORY

    Jun 26, 2014 · The start of World War I, the so-called "Great War" of 1914 to 1918, was triggered when a teenage Serbian revolutionary shot Archduke Franz Ferdinand, the presumptive heir to …

  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. Austria-Hungary issues ultimatum to Serbia - HISTORY

    Oct 28, 2009 · Acting with the full support of its allies in Berlin, Austria-Hungary had determined in the aftermath of Franz Ferdinand’s assassination to pursue a hard-line policy towards Serbia. …