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  1. World War I - Wikipedia

    Major areas of conflict included Europe and the Middle East, as well as parts of Africa and the Asia-Pacific. The war saw important developments in weaponry including tanks, aircraft, artillery, machine …

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

    6 days ago · World War I, an international conflict that in 1914–18 embroiled most of the nations of Europe along with Russia, the United States, the Middle East, and other regions.

  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. World War I Timeline Experience “The Great War: A Visual History”

    ABMC honors the services of overseas U.S. armed forces by maintaining and promoting America’s overseas commemorative cemeteries and memorials.

  5. 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 Powers of Germany, …

  6. 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, alliances, leaders, trench warfare, key turning points, Treaty of Versailles, consequences, and the …

  7. 1914-1918-Online. International Encyclopedia of the First World War (WW1)

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

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

    Huge armies deployed new weapons to devastating effect. Over nine million soldiers and an unknown number of civilians lost their lives. Empires crumbled, revolution engulfed Russia, and America...

  9. World War I Centennial - National Archives

    Aug 23, 2022 · As the largest repository of American World War I records, the National Archives invites you to browse the wealth of records and information documenting the U.S. experience in this conflict, …