World War I
World War I or the First World War, often abbreviated as WWI or WW1, began on 28 July 1914 and ended on 11 November 1918.- World War I
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Constitutional monarchy and great power in Central Europe between 1867 and 1918.
It was formed with the Austro-Hungarian Compromise of 1867 in the aftermath of the Austro-Prussian War and was dissolved shortly after its defeat in the First World War.
The Triple Entente (from French entente meaning "friendship, understanding, agreement") describes the informal understanding between the Russian Empire, the French Third Republic and the United Kingdom of Great Britain and Ireland.
At the start of World War I in 1914, all three Triple Entente members entered it as Allied Powers against the Central Powers: Germany and Austria-Hungary.
[[File: Leaders of the Central Powers - Vierbund.jpg|thumb|upright=1.3|Leaders of the Central Powers (left to right):
The Central Powers, also known as the Central Empires, was one of the two main coalitions that fought World War I (1914–18).
Military alliance between Germany, Austria-Hungary, and Italy.
On 18 October 1883 Carol I of Romania, through his Prime Minister Ion C. Brătianu, had also secretly pledged to support the Triple Alliance, but he later remained neutral in the First World War due to viewing Austria-Hungary as the aggressor.
The July Crisis was a series of interrelated diplomatic and military escalations among the major powers of Europe in the summer of 1914, which led to the outbreak of World War I (1914–1918).
Sovereign state that is recognized as having the ability and expertise to exert its influence on a global scale.
Since then, the international balance of power has shifted numerous times, most dramatically during World War I and World War II.
The Schlieffen Plan (Schlieffen-Plan, ) is a name given after the First World War to pre-war German war plans, due to the influence of Field Marshal Alfred von Schlieffen and his thinking on an invasion of France and Belgium, which began on 4 August 1914.
Multiple geographical names mentioned below changed in the discussed period.
The Treaty of London (Trattato di Londra) or the Pact of London (Patto di Londra) was a secret agreement concluded on 26 April 1915 by the United Kingdom, France, and Russia on the one part, and Italy on the other, in order to entice the latter to enter World War I on the side of the Triple Entente.
The First Battle of the Marne was a battle of the First World War fought from 5 to 12 September 1914.
The Western Front is one of the main theatres of war during the First World War.