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The Grand Duchy of Lithuania decisively won the Battle of the Vikhra River, forcibly making the Principality of Smolensk a vassal state.
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Grand Duchy of Lithuania
European state from c. 1236 to 1795
The Grand Duchy of Lithuania was a sovereign state in northeastern Europe that existed from the 13th century, succeeding the Kingdom of Lithuania, to the late 18th century, when the territory was suppressed during the 1795 partitions of Poland–Lithuania. The state was founded by…Source: Wikipedia (CC BY-SA)
Battle of the Vikhra River
1386 battle between the Grand Duchy of Lithuania and the Principality of Smolensk
The Battle of the Vikhra River took place on 29 April 1386 on the Vikhra River, tributary of the Sozh River, near Mstislavl between the Grand Duchy of Lithuania and the Principality of Smolensk. The Lithuanians achieved a decisive victory and Smolensk was forced to accept being…Source: Wikipedia (CC BY-SA)
Principality of Smolensk
State in Eastern Europe from 1054 to 1508
The Principality of Smolensk was a Ruthenian 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…Source: Wikipedia (CC BY-SA)
Vassal state
State subordinate to another state
A vassal state is any state that has a mutual obligation to a superior state or empire, in a status similar to that of a vassal in the feudal system in medieval Europe. Vassal states were common among the empires of the Near East, dating back to the era of the Egyptian, Hittite,…Source: Wikipedia (CC BY-SA)