First world war kab hui thi??

28 July 1914 - 11 November 1918

World War I (often abbreviated as WWI or WW1), also known as the First World War or the Great War, was a global war that lasted from 28 July 1914 to 11 November 1918. Contemporaneously described as "the war to end all wars",[7] it led to the mobilisation of more than 70 million military personnel, including 60 million Europeans, making it one of the largest wars in history.[8][9] It is also one of the deadliest conflicts in history,[10] with an estimated nine million combatant deaths and 13 million civilian deaths as a direct result of the war,[11] while resulting genocides and the related 1918 influenza pandemic caused another 17–100 million deaths worldwide.[12][13] World War I Clockwise from the top: The road to Bapaume in the aftermath of the Battle of the Somme, 1916   British Mark V tanks crossing the Hindenburg Line, 1918   HMS Irresistible sinking after hitting a mine in the Dardanelles, 1915   A British Vickers machine gun crew wears gas masks during the Battle of the Somme, 1916   German Albatros D.III biplane fighters near Douai, France, 1917 Date28 July 1914 – 11 November 1918 (4 years, 3 months and 2 weeks) Peace treaties Treaty of Versailles Signed 28 June 1919 (4 years and 11 months)[b] Treaty of Saint-Germain-en-Laye Signed 10 September 1919 (5 years, 1 month, 1 week and 6 days) Treaty of Neuilly-sur-Seine Signed 27 November 1919 (4 years, 1 month, 1 week and 6 days)[c] Treaty of Trianon Signed 4 June 1920 (5 years, 10 months and 1 week) Treaty of Sèvres Signed 10 August 1920 (6 years, 1 week and 6 days)[d] United States–Austria Peace Treaty Signed 24 August 1921 (3 years, 8 months, 2 weeks and 3 days)[e][f] United States–Germany Peace Treaty Signed 25 August 1921 (4 years, 4 months, 2 weeks and 5 days)[g] United States–Hungary Peace Treaty Signed 29 August 1921 (3 years, 8 months, 3 weeks and 1 day)[h] Treaty of Lausanne Signed 24 July 1923 (8 years, 8 months, 3 weeks and 4 days)[i] Location Europe, Africa, the Middle East, the Pacific Islands, China, Indian Ocean, North and South Atlantic Ocean Result Allied victory Central Powers victory on the Eastern Front nullified by defeat on the Western Front Fall of all continental empires in Europe (including Germany, Russia, Ottoman Turkey and Austria-Hungary) Russian Revolution and Russian Civil War, with the collapse of the Russian Empire and the subsequent formation of the Soviet Union Widespread unrest and revolutions throughout Europe and Asia Creation of the League of Nations (more ...) Territorial changes Formation of new countries in Europe and the Middle East Transfer of German colonies and territories, Partitioning the former Ottoman Empire, Austria-Hungary and the Russian Empire, transfer of territories to other countries BelligerentsAllied Powers:  France  British Empire  United Kingdom  Canada  Australia  India  New Zealand  Newfoundland  South Africa  Russia[a] (1914–17)  Serbia  Montenegro  Belgium  Japan  Italy (1915–18)  United States (1917–18)  Romania (1916–18)  Portugal (1916–18)  Hejaz (1916–18)  China (1917–18)  Greece (1917–18)  Siam (1917–18) ... and others Central Powers:  Germany  Austria-Hungary  Ottoman Empire  Bulgaria (1915–18) ... and co-belligerents