The Mensheviks and Bolsheviks were the two main factions of the Russian Social Democratic Labour Party (RSDLP) that split in 1903. The Mensheviks, lead by Julius Martov and George Plekhanov, were a large, open, democratic party formed from the union of working class and middle-class liberal allies. In contrast, the Bolsheviks, led by Vladimir Lenin, were a small, highly disciplined group of professional revolutionaries formed from a union of the working class and poor peasantry. The Mensheviks said the communist revolution first needed to undergo a bourgeois capitalist revolution before transitioning to a communist state, whereas the Bolsheviks favoured a direct transition, skipping capitalism. The Mensheviks aimed to pursue federalist and democratic means to develop the agricultural base of the early USSR whereas the Bolsheviks favoured centralised, authoritarian rule to rapidly industrialise Russia. Further, they differed ideologically on their global outlook for socialism with the Mensheviks favouring the expansion of social democracies through the world, as opposed to the Bolsheviks who favoured exporting revolutionary communism.