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  1. World War I - Wikipedia

    The Bolsheviks signed an armistice followed by a separate peace shortly after their armed seizure of power. ^ Often abbreviated as WWI or WW1 ^ Only the Triple Alliance was a formal …

  2. World War I - Encyclopedia Britannica

    Nov 17, 2025 · King Charles III leads Britain's Remembrance Sunday ceremony for war dead • Nov. 9, 2025, 8:33 AM ET (AP) WWI soldiers' messages in a bottle found on Australian beach …

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

    Oct 29, 2009 · French soldiers in Verdun endure the horrors of trench warfare, a strategy that led to rampant disease, shell shock and mass casualties during WWI.

  4. The United States and the First World War - World War I Memorial …

    Library of Congress image In the summer of 1914, the assassination of Archduke Franz Ferdinand, heir to the Austro-Hungarian Empire, ignited a continental war between the Central …

  5. Key Dates - National WWI Museum and Memorial

    Jul 18, 2019 · When did it end? This page provides a brief summary of the important events and battles of the war, from the start of the conflict through the peace treaties. To learn more, …

  6. World War I - Library of Congress

    World War I was a war like no other, and U.S. participation in this global conflict had a profound impact on those who fought and on the future of the nation.

  7. World War I: Causes and Timeline | HISTORY

    WWI Inventions, From Pilates to Zippers, That We Still Use Today These World War I inventions made life easier during—and after—the war.

  8. The Terrors of Poison Gas in WWI - World History Encyclopedia

    Nov 19, 2025 · Non-lethal tear gas (lachrymatory) was experimented with in the early part of WWI, but the first major assault using deadly poison gas was undertaken by the German Army …

  9. World War I | Britannica

    World War I: To its contemporaries, it was known simply as "the World War" or "the Great War," because it was nearly impossible to imagine a conflict that would surpass the one that …

  10. Timeline of World War I - Wikipedia

    "WWI Timeline". National Wwi Museum and Memorial. USA: National World War I Museum. "World War One Timeline". UK: BBC. "New Zealand and the First World War (timeline)". New …