World War I World War I was a military conflict that began as a local European war between Austria-Hungary and Serbia on July 28, 1914 and eventually became a global war involving 32 nations. Twenty-eight of these nations, known as the Allies and the Associated Powers, and including Britain, France, Russia, Italy, and the United States, opposed the coalition known as the Central Powers, consisting of Germany, Austria-Hungary, the Ottoman Empire (now Turkey), and Bulgaria. The immediate cause …showed first 75 words of 9285 total…

…showed last 75 words of 9285 total…Allies for the all-important 14th point, which called for the creation of an association of nations, he abandoned his insistence on some of the other points. See League of Nations. The peace treaties that emerged from the conferences at Versailles, Saint-Germain, Trianon, Neuilly, and Sèvres were on the whole inadequately enforced by the victorious powers, leading to the resurgence of militarism and aggressive nationalism in Germany and to social disorder throughout much of Europe.