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The first use of tanks on the battlefield was the use of British Mark I tanks at the Battle of Flers-Courcelette

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Ottoman government's systematic extermination of 1.5 million Armenians, mostly Ottoman citizens within the Ottoman Empire

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The strong belief that the interests of a particular nation-state are of primary importance

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the understanding linking the Russian Empire, the French Third Republic, and the United Kingdom of Great Britain and Ireland after the signing of the Anglo-Russian on 31 August 1907

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the German emperor, the emperor of Austria, or the head of the Holy Roman Empire.

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the German emperor, the emperor of Austria, or the head of the Holy Roman Empire.

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was a secret agreement between Germany, Austria-Hungary, and Italy formed on 20 May 1882 and renewed periodically until World War I

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rise in military expenditure, an increase in military and naval forces, more influence of the military men upon the policies of the civilian government, and a preference for force as a solution to problem