Victory at the Battle of Vikhra River

Date: April 29, 1386 • Location: Mstsislaw, Belarus

The Grand Duchy of Lithuania decisively won the Battle of the Vikhra River, forcibly making the Principality of Smolensk a vassal state.

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 Lithuanians, who were at the time a polytheistic nation of several united Baltic tribes from Aukštaitija. By 1440 the grand duchy had become the largest European state, controlling an area from the Baltic Sea in the north to the Black Sea in the south.