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World War I (WWI or WW1), also known as the First World War, the Great War, or the War to End All Wars,[1] was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history.[2][3] Over nine million combatants and seven million civilians died as a result of the war (including the victims of a number of genocides), a casualty rate exacerbated by the belligerents' technological and industrial sophistication, and the tactical stalemate caused by gruelling trench warfare. It was one of the deadliest conflicts in history, and paved the way for major political changes, including revolutions in many of the nations involved. Unresolved rivalries still extant at the end of the conflict contributed to the start of the Second World War only twenty-one years later.[4]



  1. "The war to end all wars". BBC News. 10 November 1998.
  2. Keegan, John (1998). The First World War. Hutchinson. ISBN 0-09-180178-8., general military history, p.8
  3. Bade, Klaus J; Brown, Allison (tr.) (2003). Migration in European History. The making of Europe. Oxford: Blackwell. p.167-68; ISBN 0-631-18939-4. OCLC 52695573.
  4. Willmott, H.P. (2003). World War I. New York: Dorling Kindersley. p.307; ISBN 0-7894-9627-5. OCLC 52541937