There are several main questions that have to be asked about the alliance systems in 1914.
Why didn`t Great Britain make its position clear until August 1914?
The whole situation changed with the launch of the Dreadnought class ship in 1906.
This class was superior in speed, Armament, and engine efficiency than any existing boat.
The war pitted the Central Powers—mainly Germany, Austria-Hungary, and Turkey—against the Allies—mainly France, Great Britain, Russia, Italy, Japan, and, from 1917, the United States. The war was virtually unprecedented in the slaughter, carnage, and destruction it caused.
World War I combat was a clash between 19th-century tactics and 20th-century technology.
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World War I, also called First World War or Great War, an international conflict that in 1914–18 embroiled most of the nations of Europe along with Russia, the United States, the Middle East, and other regions.
In 1892 the agreement developed into a military convention, which in 1894 developed into a full alliance.
This agreement was a counter-measure to the renewal of the Triple alliance.