110 years ago, on April 30, 1907, the Fifth (London) Congress of the RSDLP opened, which turned out to be the last joint congress of Bolsheviks and Mensheviks. The congress adopted a resolution on the prohibition of expropriations and the dissolution of all combat squads that dealt with them. Despite this, the Bolsheviks retained part of the fighting squads and did not continue to carry out expropriations. Due to disagreements between the Bolsheviks and the Mensheviks, the Central Committee elected at the congress turned out to be inoperative. The leadership of the Bolshevik organizations was taken over by the "Bolshevik Center" headed by Lenin, secretly created during the congress. Thus, there was a final split between the Bolsheviks and the Mensheviks.