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World War I or the First World War (28 July 1914 – 11 November 1918) was a global conflict between two coalitions: the Allies and the Central Powers.
Causes of World War I · Immediate causes · Polarization of Europe, 1887–1914 · Domestic political factors · Imperialism · Social Darwinism · Arms race ...
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World War I (WWI or WW1), also called the First World War, began on July 28, 1914 and lasted until November 11, 1918. It was a global war and lasted exactly ...
A world war is an international conflict that involves most or all of the world's major powers. Conventionally, the term is reserved for two major ...