Болгарская социалистическая партия
The Bulgarian Socialist Party is recognized as the successor of the Bulgarian Social Democratic Workers' Party created on 2 August 1891 on Buzludzha peak by Dimitar Blagoev, designated in 1903 as the Bulgarian Social Democratic Workers' Party (Narrow Socialists) and later as the Bulgarian Communist Party. The party was formed after the political changes of 1989, when the Communist Party abandoned Marxism–Leninism and refounded itself as the "Bulgarian Socialist Party" in April 1990.