World War One started a war and ended a war. That war was called World War One.
World war 1 started in July 28 1914 up until November 11 1918. 4 Months and 4 Years, lasted a few days after months. It was fought between Triple Entente or Allied Powers including Great Britain, France, Russia, Belgium, Italy, Japan and USA and other nations too defeated The Central powers including Germany, Austria-Hungary, Ottoman Empire and Bulgaria, and Turkey.What did world war 1 start?