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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, …

  2. World War I - Encyclopedia Britannica

    Nov 17, 2025 · 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 catapulted into a war across Europe that …

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

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

  5. The Causes of WWI - World History Encyclopedia

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

  6. WORLD WAR I OVERVIEW - HISTORY CRUNCH

    World War I occurred from 1914 until 1918 and was one of the most significant events of the 20th century. At the time, it was referred to as the ‘Great War’ or the ‘War to End All Wars’. Today, …

  7. World War One (WW1) | HistoryExtra

    World War One (WW1) was a major global conflict that lasted four years, from 1914 to 1918. It began on 28 July 1914, when Austria-Hungary declared war on Serbia one month to the day …

  8. World War I facts and information | National Geographic

    In just four years between 1914 and 1918, World War I changed the face of modern warfare, becoming one of the deadliest conflicts in world history. World War I had a variety of causes,...

  9. List of military engagements of World War I - Wikipedia

    This list of military engagements of World War I covers terrestrial, maritime, and aerial conflicts, including campaigns, operations, defensive positions, and sieges. Campaigns generally refer …

  10. World War I: Causes and Timeline | HISTORY

    World War I—also known as the Great War—pitted Germany, Austria-Hungary and the Ottoman Empire against Great Britain, the United States, France, Russia, Italy and Japan. New military...