Who was Vladimir Lenin and the Bolsheviks?

they were Russian social democrats who wanted a change in government brought about by an industrial revolution. The Party was considered illegal so majority of the members were either in prison or in exile until August 1917 when the Provisional Government requested their help in trying to fight of General Kornilovs troops who were believed to be staging a military coup. After this the Bolshevik popularity grew with membership increasing to 2 million. They staged the 1917 October Revolution where they arrested the Provisional Government and declared themselves in power through the use of the Military Revolutionary Committee.