World War I (jul 28, 1914 – nov 11, 1918)

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World War I, also known as the Great War, was a global conflict that originated in Europe and lasted from 1914 to 1918, involving many of the world's great powers organized into two opposing alliances: the Allies and the Central Powers. The United States entered the war in 1917 on the side of the Allies, and the conflict was characterized by trench warfare, the extensive use of chemical weapons, and immense casualties, leading to major political changes and the redrawing of national borders in its aftermath.

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