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
History of Lithuania 1410, but the allied armies failed to take Marienburg, the Knights' fortress-capital. Nevertheless, the unprecedented total battlefield victory against the Knights permanently removed the threat that they had posed to Lithuania's existence for centuries. The Peace of Thorn (1411) allowed Lithuania to recover Samogotia, but only until the deaths of Jogaila and Vytautas, and the Knights had to pay a large monetary reparation. The Union of Horodło (1413) incorporated Lithuania into Poland again, but only as a formality. In practical terms, Lithuania became an equal partner with Poland, because each country was obliged to choose its future ruler only with