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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: 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.

  3. World War I - Encyclopedia Britannica

    1 day ago · World War I (1914–18) was an international conflict that embroiled most of the nations of Europe along with Russia, the U.S., the Middle East, and other regions. It led to the fall of …

  4. Timeline (1914 - 1921) | A World at War - Library of Congress

    Collection Stars and Stripes: The American Soldiers' Newspaper of World War I, 1918 to 1919

  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. 1914-1918-Online. International Encyclopedia of the First World …

    Explore the comprehensive, peer-reviewed "1914-1918-online" encyclopedia. Access 1,600+ articles on WWI from global experts.

  7. The Causes of WWI - World History Encyclopedia

    May 15, 2025 · The three main causes of WWI were Germany's imperialist ambitions, a rise in nationalist independence movements in the Balkans, and a complex network of international …

  8. World War I Memorial (U.S. National Park Service)

    May 15, 2024 · A grateful nation honors the service, valor, courage and sacrifice of the 4.7 million American sons and daughters who served in the Great War.

  9. Six Causes of World War I - Norwich University Online

    Though the assassination of Archduke Ferdinand was the direct precipitating event leading to the declaration of war, there were many other factors that also played a role in leading up to World …

  10. The Causes and Aims of World War One - ThoughtCo

    May 1, 2025 · A guide to the causes of World War One, why each of the major belligerents became involved, and what they wanted from it.