World War I By Tasha love Jun 28, 1914 Assassination of Archduke Ferdinand Archduke Ferdinand Period: Jul 20, 1914 to Aug 23, 1914 August 23, 1914. Japan declares war on Germany. https://www.history.com/this-day-in-history/japan-gives-ultimatum-to-germany Period: Jul 25, 1914 to Aug 25, 1914 Austria declares war on Japan. http://www.historyplace.com/worldhistory/firstworldwar/index-1914.html Period: Jul 28, 1914 to Aug 6, 1914 August 6, 1914. Austria declares war on Russia. https://www.history.com/this-day-in-history/austria-hungary-declares-war-on-serbia Aug 1, 1914 Germany declares war on Russia [Germany declares war on Russia]http://www.historyplace.com/worldhistory/firstworldwar/index-1914.html Jul 1, 1916 Battle of the Somme https://www.history.com/topics/world-war-i/battle-of-the-somme Dec 7, 1917 U.S. declares war on Austria-Hungary. https://history.state.gov/milestones/1914-1920/wwi Jun 28, 1919 Treaty of Versailles. https://www.youtube.com/watch?v=vrYhLNQMRro
