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  1. World War I - Wikipedia

    ^ Including 2,000,000 German soldiers, at least 1,000,000 Austro-Hungarians, 800,000 Ottoman troops[2] ^ Often abbreviated as WWI or WW1 ^ Only the Triple Alliance was a formal "alliance"; the …

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

    Jan 2, 2026 · Timothée Chalamet, a Neil Diamond tribute band and more in theaters for Christmas • Dec. 24, 2025, 9:14 PM ET (NPR) Wartime Christmas greetings sent by biscuit revealed in Leeds • …

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

    Oct 29, 2009 · WWI was one of the deadliest conflicts in human history, with total casualties estimated at over 16 million.

  4. The Story of WWI in 50 Images - World History Encyclopedia

    Jan 12, 2026 · The First World War (1914-18) was the first global conflict, the first mechanised conflict, and the first to involve civilians far from the fighting front. In this gallery of 50 images, we explore the...

  5. About WWI - National WWI Museum and Memorial

    WWI Categories WWI Essentials Learn the essentials about World War I and understand the key events and impacts of the war.

  6. The United States and the First World War - World War I ...

    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 Powers of Germany, …

  7. WORLD WAR I OVERVIEW - HISTORY CRUNCH

    World War I began in June of 1914, and is considered to have five major causes that led to the outbreak of the war. These five causes include the four long-term causes (militarism, alliances, imperialism …

  8. World War I Centennial - National Archives

    Aug 23, 2022 · Gun crew from Regimental Headquarters Company, 23rd Infantry, firing 37 mm gun during an advance on German entrenched positions. View in Catalog. As the largest repository of …

  9. 1914-1918-Online. International Encyclopedia of the First ...

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

  10. World War I - Topics | Library of Congress

    Exhibition Echoes of the Great War: American Experiences of WWI Explore how Americans experienced the upheaval of world war—at home and abroad.