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Because St Petersburg sounded ‘too German’, the city's name was officially changed to Petrograd on 31 August 1914.
Under the Tsarist system the Tsar appointed both the prime minister and his cabinet. The elected State Duma (Parliament) had no say in either this process or the governing of the empire in general.
In the face of widespread civil unrest and outbreaks of mutiny in the armed forces the Tsar’s government collapsed and the Tsar himself abdicated on 15 March 1917. A Provisional Government was formed by members of the existing Duma, while a more radical Petrograd Soviet emerged as an alternative centre of power. Initially the Petrograd Soviet co-operated with and deferred to the Provisional Government in what became known as the ‘Dual Authority’. The Bolsheviks focused on strengthening their position within the Soviet and increasing their support amongst workers and soldiers. Despite opposition from the Bolsheviks (and others), the Provisional Government kept Russia in the war and tried to maintain good relations with the other Allies.
The uneasy and tense relationship between the Bolsheviks and the Provisional Government ended when the Bolsheviks forcibly seized power in Petrograd and other key Russian cities on 7 November 1917 (25 October by the Julian calendar then used in Russia). The Bolshevik leadership had promised to withdraw from the war and quickly entered into negotiations with the Germans and Austrians. An armistice was agreed in December and the Treaty of Brest-Litovsk was signed in the new year.
Both the armistice and the subsequent peace treaty between Russia and the Central Powers were negotiated by the Russian Soviet Republic led by Lenin. The Russian Empire ceased to exist as a result of the cumulative effects of the February and October revolutions.
In the years following the revolutions, ethnic minorities and outer regions of the old empire asserted their independence. Some, such as Finland, were successful, while others, such as Ukraine, ultimately were not. Meanwhile anti-Bolshevik forces, aided by the Allies, regrouped to challenge the new regime in what became known as the Russian Civil War.
(not including losses in the Russian Civil War)
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