Administrative divisions of Lithuania 1561, became a condominium (joint domain) of both Lithuania and Poland. This left Lithuania with eight voivodeships and one eldership: After the Livonian War (1558–1582), Lithuania acquired the vassal state of Duchy of Courland with its capital Jelgava. This administrative division remained without any major changes until the partitions of the Polish–Lithuanian Commonwealth in the late 18th century. Under the Russian Empire, the territory of the former Grand Duchy of Lithuania was divided into governorates (Russian: "guberniya", Lithuanian: "gubernija") and districts (Russian: "uyezd", Lithuanian: "apskritis"). Such system was introducing in Russia during the reforms of 1775. The first governorates, Vilna
Act of Independence of Lithuania the first Cabinet of Lithuania was formed, and the Council of Lithuania gained control over the territory of Lithuania. Independent Lithuania, although it would soon be battling the Wars of Independence, became a reality. The laconic Act is the legal basis for the existence of modern Lithuania, both during the interwar period and since 1990. The Act formulated the basic constitutional principles that were and still are followed by all Constitutions of Lithuania. The Act itself was a key element in the foundation of Lithuania's re-establishment of independence in 1990. Lithuania, breaking away from the Soviet Union, stressed that it