World War I

World War I was an colossal conflict between a large number of nations of the world which began in 1914, saw an end to fighting on November 11, 1918, but saw an official end in 1919 with the Treaty of Versailles.

MAIN
The causes of World War I can be explained in a simple acronym: MAIN.

Belligerents
The contesting forces involved in the War are the Central Powers, which are Germany, Austria-Hungary, Bulgaria, and the Ottoman Empire, and the Allied Powers or, the Triple Entente, which are France, the United Kingdom, Russia, and eventually the USA, Italy, and Japan to name a few.