settled in Sofia and began to propagate socialist ideas. In July 1891, on his initiative, the social democratic circles of Veliko Tarnovo, Gabrovo, Sliven, Stara Zagora, Kazanlak and other cities united to form the Bulgarian Social Democratic Party (BSDP). The marxist nucleus of the BSDP was opposed by a group, who were essentially opposed to making the social democratic movement into a party. In 1893 this group, led by Yanko Sakazov, founded a reformist organization, the Bulgarian Social Democratic Union. In 1894, Blagoev’s supporters agreed to unite with the Unionists in the interests of working class unity and took the name Bulgarian Social Democratic Workers Party. He was a founder and became the leader of its left wing, which split from the BSDWP in 1903 to found the Bulgarian Social Democratic Workers' Party (Narrow Socialists). Blagoev was also activist of the Plovdiv Macedonian-Adrianople Committee, and its chairman from 1897. In 1898 Gotse Delchev made attempt to convince him to lead the Supreme Macedonian-Adrianople Committee, but he refused. Under his guidance the foundations of the class trade-union movement was laid in 1904. From 1897 to 1923 Blagoev directed the publication of the party’s theoretical organ, the journal "Novo vreme", which published more than 500 of his articles. Meanwhile, he worked as teacher in different cities in Bulgaria. In 1905, Blagoev translated into Bulgarian the first volume of Das Kapital and a number of other works by Marx. Blagoev’s book "From the History of Socialism in Bulgaria" was published in 1906 and it has initiated Bulgarian Marxist historiography. He led the delegations of narrow socialists at the Balkan socialist conferences in Belgrade (1910) and Bucharest (1915). Wartime activities and stance He was against foreign intervention by the Great Powers in Southeast Europe, believed in a Balkan Federative Republic and opposed Bulgaria's military engagements in the Second Balkan War and First World War. A deputy to the National Assembly of Bulgaria, Blagoev voted in October 1914, along with the rest of the faction of narrow socialists, against war credits. During World War I as deputy Blagoev exposed "the war’s imperialist nature and the traitorous role of the Second International". Blagoev hailed the Russian October Revolution and propagandized for the ideas of the Bolsheviks. Under his leadership the Narrow Socialist party broke with the Second International. In a speech before the Bulgarian National Assembly in 1917, Blagoev called himself "Macedonian Slav". In a Declaration