Bolshevism was born at the Second Congress of the Russian Social Democratic Labour Party (RSDLP) in 1903. Bolsheviks were the majority group of workers of Russia.
They believed in revolutionary methods of bringing about changes in society and the state. After the October Revolution, Russia became a one-party state, i.e. the Bolshevik Party, which was renamed as the Russian Communist Party (Bolshevik). They changed the whole structure of Russia and Russian society.