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  1. World War I - Wikipedia

    World War I, [b] or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a global conflict between two coalitions: the Allies (or Entente) and the Central Powers. …

  2. World War I | Causes, Years, Combatants, Casualties, Maps, & Facts ...

    Jun 18, 2026 · 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 four great …

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

    Oct 29, 2009 · World War I, also known as the Great War, started in 1914 after the assassination of Archduke Franz Ferdinand of Austria. His murder escalated into a war across Europe that lasted until …

  4. Causes of World War I - Wikipedia

    Identifying the causes of World War I remains a debated issue. World War I began in the Balkans on 28 July 1914, and hostilities ended on 11 November 1918, leaving 17 million dead and 25 million …

  5. World War I: Causes, Timeline, Battles, Leaders & Global Impact ...

    Apr 10, 2026 · Explore World War I with a complete guide to its causes, timeline, major battles, alliance systems, trench warfare, key leaders, weapons, the Treaty of Versailles, impact on India and …

  6. 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 caused World War I.

  7. The Causes of WWI - World History Encyclopedia

    May 15, 2025 · The origins of the First World War (1914-18) are many and varied, with some even dating back several decades, but a political assassination in the Balkans in the summer of 1914 was …

  8. World War 1: A Comprehensive Overview of the Great War

    World War 1 inflicted hitherto unseen violence on Europe and entangled the entire planet in the conflict—the first time a war was so far reaching.

  9. 1914-1918-Online. International Encyclopedia of the First World War (WW1)

    A Global War – A Global Project 1914-1918-online. International Encyclopedia of the First World War is the largest digital English-language reference work on the First World War. The multi-perspective, …

  10. World War One: The global conflict that defined a century - BBC

    World War One began almost by accident and ended just as strangely. It was the first truly global conflict and saw death on an industrial scale.