At the beginning of 1917 most of the Bolsheviks were in exile but by the end of 1917 the Bolshevik party had not only consolidated control of Moscow and Petrograd, but they were also advancing on the rest of the country. This success was due to several linked factors; the Bolshevik policy of non-cooperation, weakness of the Provisional Government, division of alternative opposition, Lenin's leadership skills, the power of the Petrograd Soviet and Trotsky as its leader, failure on deliver of land reform and the oppressed, armed workers in Petrograd.
Bolshevik success is dictated by whether they met their aims; these included the establishment of a Socialist government over the whole of Russia, which would be ruled by a centralised democracy achieved through a Proletarian Revolution.
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