Which faction of the Marxist Russian Social Democratic Labour Party did Nikolai Krivoruchko join?
Bolsheviks The Bolsheviks, originally also Bolshevists or Bolsheviki (Russian: большевики, большевик (singular) ; ] ; derived from большинство "bol'shinstvo", "majority", literally meaning "one of the majority") were a faction of the Marxist Russian Social Democratic Labour Party (RSDLP) which split apart from the Menshevik faction at the Second Party Congress in 1903. The RSDLP was a revolutionary socialist political party formed in 1898 in Minsk in Belarus to unite the various revolutionary organisations of the Russian Empire into one party.
Polish–Lithuanian Social Revolutionary Party The Polish–Lithuanian Social Revolutionary Party was a short-lived political party in the Russian empire. The party was founded in Saint Petersburg in 1881. It was the continuation of "Gmina Polska" ('Polish Commune'), a grouping formed by Polish students from Kiev, Moscow, Vilna and Saint Petersburg in 1880. The actions of party were led by a nucleus called "Ognisko" ('the Centre').