Battle of Klokotnitsa
1230 CE.
Shown on the map at 41.983°, 25.500°.
The Battle of Klokotnitsa (Bulgarian: Битката при Клокотница, Bitkata pri Klokotnitsa) occurred on 9 March 1230 near the village of Klokotnitsa (today in Haskovo Province, Bulgaria) between the Second Bulgarian Empire and the Empire of Thessalonica. As a result, Bulgaria emerged once again as the most powerful state in South-Eastern Europe.
Text from the Wikipedia article Battle of Klokotnitsa, licensed CC BY-SA 4.0.