What was the difference between the Bolshevik and Menshevik groups?

The Bolsheviks were the majority group of workers of Russia, while the Mensheviks were the minority group.

The Mensheviks argued that Russia was just beginning the capitalist stage of development, so the main task for them was, alongside providing the workers with a Marxist framework, to help build the democratic, capitalist institutions of the state.

The Bolsheviks argued that the stages of history could be ‘telescoped’ and that, as Russia had been imperialist, its capitalist stage could be shortened, allowing for the building of socialism.