Duchy of Lithuania Duchy of Lithuania Duchy of Lithuania (; ) was a state-territorial formation of ethnic Lithuanians, that existed from the 13th century until 1413. Most of the time it was a constituent part and a nucleus of the Grand Duchy of Lithuania. Other alternative names of the territorial formation, used in different periods, were Aukštaitija or Land of Lithuania (13th century), Duchy of Vilnius (14th – early 15th centuries), Lithuania Propria or simply Lithuania (in a narrow sense). The formation emerged in the central and eastern part of the present-day Lithuania, known as Aukštaitija, as the Lietuva Land (). It is
Socialist Party of Lithuania regulated, socially oriented market economy - with the production forces and relations of production the managements goal. Markets in the system - as far as possible, and state regulation - as needed. It considers the principles of state regulation as the best economic development incentive. The LSP ideology was based on the methodology of dialectical materialism, the theory of Marxism and contemporary social science. It believed that Socialists should unambiguously disassociate from Stalinist and totalitarian theories and practice. LSP propagated what it believed to be the new 21st century socialism. Socialist Party of Lithuania Socialist Party of Lithuania () was