1.World War, took place between 1914 and 1918. The reason of this war called World War I a large part of the Battle of the States colonies in other parts of the world. There are two sides of war. Entante states are : United Kingdom, France, Romania, Russia, Italy, Portugal, Japan, Greece, and Serbia. The Central Powers are : Germany, Austria – Hungary, Italy, Ottoman Empire and Bulgaria. As a result of First World War, approximately 10 million people lost their lives and the Entate states won the war. Some large states have collapsed, new states were established. In some states, a regime change has occurred.