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1914 Assassination of Archduke Francisco Fernando in Sarajevo. Austria-Hungary and Serbia declare war. Germany invades France and Belgium. First battle of the Marne.

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1919 Signature of the Versailles peace treaties.

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1918 Russia signs peace with Germany by the Brest-Litovsk Treaty. Austria-Hungary signs the armistice with the Entente. Germany signs the armistice with the Entente.

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Main events during the development of the world from the first war.

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Main events during the development of the world from the first war.

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World War I began in 1914 after the murder of Archduke Franz Ferdinand and lasted until 1918. During the conflict, Germany, Austria-Hungary, Bulgaria, and the Ottoman Empire (the central powers) fought against Great Britain, France, Russia, Italy, Romania, Japan and the United States (the allied powers)

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Countries that participated, They divided in two groups

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Countries that participated, They divided in two groups

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United Kingdom, France and the Russian Empire.

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Austro-Hungarian Empire, German Empire and Italy,

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1917 The United States declares war on the Central Empires. Bolshevik revolution.