CONFLICT BETWEEN: The Central Powers (Germany, Austria-Hungary, and Turkey) and the Allied Powers (France, Britain, Russia, Italy, Japan, and (from 1917) the U.S.)
-CAUSE: Assassination of Archduke Francis Ferdinand of Austria in June 1914. Militarism, Imperialism, nationalism and alliance system.
-War between countries for acquiring colonies or territory or resources.
-OUTCOME: German, Russian, Austro-Hungarian and Ottoman empires were defeated. Austro-Hungarian and Ottoman empires ceased to exist. The League of Nations was formed in the hope of preventing another such conflict.