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.
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