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
Politics of Lithuania Politics of Lithuania Politics of Lithuania takes place in a framework of a unitary semi-presidential representative democratic republic, whereby the President of Lithuania is the head of state and the Prime Minister of Lithuania is the head of government, and of a multi-party system. Executive power is exercised by the President and the Government, which is headed by the Prime Minister. Legislative power is vested in both the Government and the unicameral Seimas (Lithuanian Parliament). Judicial power is vested in judges appointed by the President of Lithuania and is independent of executive and legislature power. The judiciary consists of the