Lenin was arrested in 1895, sent to jail, and later exiled to Siberia, where he married Nadezhda Krupskaya, whom he had known in the St. Petersburg underground movement. During this period, the first Russian Marxist political party was found, the Russian Social Democratic Labour Party or Social Democrats.
In 1900, Lenin went abroad to Western Europe, where he was joined by Krupskaya, and began to publish a revolutionary newspaper, Iskra (The Spark), which fellow revolutionaries smuggled into Russia. Meanwhile, in 1903 the Social Democrats held their second Congress, in Brussels and London, and there the party split in two, forming a radical group, the Bolsheviks lead by Lenin (Majority), and a more moderate group, the Mensheviks (Minority).
