A grand principality is the territory reigned by a grand prince.
A grand duchy is a country or territory whose official head of state or ruler is a monarch bearing the title of grand duke or grand duchess.
The Principality or, from 1253, Kingdom of Galicia–Volhynia, historically known as the Kingdom of Ruthenia, was a medieval state in Eastern Europe which existed from 1199 to 1349. Its territory was predominantly located in modern-day Ukraine, with parts in Belarus, Poland, Moldova, and Lithuania. Along with Novgorod and Vladimir-Suzdal, it was one of the three most important powers to emerge from the collapse of Kievan Rus'. The main language was Old East Slavic, the predecessor of the modern East Slavic languages, and the official religion was Eastern Orthodoxy.
Grand prince or great prince is a title of nobility ranked in honour below Emperor, equal to Archduke, King, Grand duke and Prince-Archbishop; above a Sovereign Prince and Duke.
Algirdas was the Grand Duke of Lithuania from 1345 to 1377. With the help of his brother Kęstutis he created an empire stretching from the present Baltic states to the Black Sea and to within 80 kilometres of Moscow.
Smolensk Voivodeship was a unit of administrative division and local government in the Grand Duchy of Lithuania and later the Polish–Lithuanian Commonwealth.
Połock Voivodeship was a unit of administrative division and local government in the Polish–Lithuanian Commonwealth since the 15th century until the partitions of Poland in 1793.
Severia or Siveria is a historical region in present-day southwest Russia, northern Ukraine, and eastern Belarus. The largest part lies in modern Russia, while the central part of the region is the city of Chernihiv in Ukraine.
The Principality of Polotsk, also known as the Duchy of Polotsk or Polotskian Rus', was a medieval principality of the Early East Slavs. The origin and date of state establishment is uncertain. Chronicles of Kievan Rus' mention Polotsk being conquered by Vladimir the Great, and thereafter it became associated with Kievan Rus' and its ruling Rurik dynasty.
The Muscovite–Lithuanian Wars were a series of wars between the Grand Duchy of Lithuania, allied with the Kingdom of Poland, and the Grand Duchy of Moscow, which would later become the Tsardom of Russia. After several defeats at the hands of Ivan III and Vasily III, the Lithuanians were increasingly reliant on Polish aid, which eventually became an important factor in the creation of the Polish–Lithuanian Commonwealth. Before the first series of wars in the 15th century, the Grand Duchy of Lithuania controlled vast stretches of Eastern European land, from Kyiv to Mozhaysk, following the collapse of Kievan Rus' after the Mongol invasions. Over the course of the wars, particularly in the 16th century, the Muscovites expanded their domain westwards, taking control of many principalities.
The inner Principality of Kiev was a medieval East Slavic state, situated in central regions of modern Ukraine around the city of Kiev.
The Principality of Smolensk was a Kievan Rus' lordship from the 11th to the 16th century. Until 1127, when it passed to Rostislav Mstislavich, the principality was part of the land of Kiev. The principality gradually came under Lithuanian influence and was incorporated into the Grand Duchy of Lithuania in 1404. The principality was reorganized into the Smolensk Voivodeship in 1508. The Grand Duchy of Moscow controlled the city from 1514 to 1611, then it was recaptured by the Polish–Lithuanian Commonwealth. Tsardom of Russia recaptured the city in 1654.
The Principality of Moscow or Grand Duchy of Moscow, also known simply as Muscovy, was a principality of the Late Middle Ages centered on Moscow. It eventually evolved into the Tsardom of Russia in the early modern period. The princes of Moscow were descendants of the first prince Daniel, referred to in modern historiography as the Daniilovichi, a branch of the Rurikids.
The Principality of Drutsk was a small appanage principality of the Polotsk principality and was centred in Drutsk. It was located on a three way stick between Vitebsk, Minsk and Mogilev regions in modern Belarus.
The Principality of Minsk was an appanage principality of the Principality of Polotsk and centered on the city of Minsk. It existed from its founding in 1101 until it was nominally annexed by the Grand Duchy of Lithuania in 1242, and then fell under de facto annexation in 1326.
The Principality of Vitebsk was a Ruthenian principality centered on the city of Vitebsk in modern Belarus, that existed from its founding in 1101 until it was nominally inherited into the Grand Duchy of Lithuania in 1320. Vitebsk would later fall under the complete authority of Lithuania in 1508.
The Principality of Tver was a principality which existed between the 13th and the 15th centuries with its capital in Tver. It was one of the states established after the decay of the Kievan Rus'. During the 14th century, Tver rivaled the Principality of Moscow with the aim to become the center of the united Russian state. Eventually it lost, decayed, and in 1485, it was annexed by Moscow. The principality was located approximately in the area currently occupied by Tver Oblast and the eastern part of Smolensk Oblast in Russia.
The Principality of Slutsk was originally a specific Turov Principality of land in the 12th through 14th centuries. It stood out in 1160 and took shape in the 1190s. It became a large feudal principality in the Grand Duchy of Lithuania.
The Lithuanian-Muscovite War of 1487–1494 was the war of the Grand Duchy of Moscow, in alliance with the Crimean Khanate, against the Grand Duchy of Lithuania and Ruthenia in alliance with the Golden Horde Khan Akhmat, united by personal union. Kingdom of Poland under the leadership of Grand Duke Casimir IV Jagiellon.
The Lithuanian–Muscovite War of 1512–1522 was a military conflict between the Grand Duchy of Lithuania and Ruthenia, which included Ukrainian and Belarusian lands, and the Grand Duchy of Moscow for Russian border lands.