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  1. 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 …

  2. 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 cau...

  3. Watch The Great War Full Episodes, Video & More - HISTORY

    “The Great War” is a four-hour cinematic documentary covering U.S. involvement in World War I in the critical year of 1918. After three years of horrific battle in the trenches of France and ...

  4. Why Did the US Enter World War I? | HISTORY

    Apr 6, 2017 · The United States entered World War I in 1917, following the sinking of the British ocean liner Lusitania and the sho...

  5. How the World War I Era Broke the British Aristocracy

    Sep 11, 2025 · World War I not only toppled empires and redrew borders—it remade the modern world, with few nations feeling the effects as profoundly as Great Britain. The country’s deadliest war —from ...

  6. Life in the Trenches of World War I - HISTORY

    Apr 23, 2018 · Trenches—long, deep ditches dug as protective defenses—are most often associated with World War I, and the results of trench warfare in that conflict were hellish indeed.

  7. Treaty of Versailles: Definition, Terms, Dates & WWI | HISTORY

    Oct 29, 2009 · The Treaty of Versailles was signed in 1919 and set harsh terms for Germany’s surrender to Allied powers after World ...

  8. How Airplanes Were Used in World War I - HISTORY

    Feb 10, 2022 · Even though airplanes were a relatively new invention, the race for air superiority started during World War I.

  9. Kaiser Wilhelm II - WWI, Abdication & Death | HISTORY

    Apr 14, 2010 · Wilhelm II (1859-1941) was the last German kaiser (emperor) and king of Prussia from 1888 to 1918, and one of the mos...

  10. The WWI Origins of the Poppy as a Remembrance Symbol - HISTORY

    May 25, 2017 · The symbolism started with a poem written by a brigade surgeon.