Multiple choice Which of the following was the period of First World War? 1904-1908 1908-1912 1914-1918 1919-1923 Reveal answer Fill a bubble to check yourself C Correct answer Explanation World War I was fought from 1914 to 1918, triggered by the assassination of Archduke Franz Ferdinand in 1914 and ending with the Armistice of 1918. The Treaty of Versailles was signed in 1919 formally ending the war. Other date ranges are incorrect.