Bulgarian Empire. In the late Middle Ages the settlement grew and was subject to Tatar raids; in the 14th century it became part of the Principality of Karvuna, which de facto broke away from the Second Bulgarian Empire under the rule of the despots Balik and Dobrotitsa of the Bulgarian royal Terter dynasty. In 1397, the Ottoman Turks nearly destroyed the city, which was abandoned but resettled again and rebuilt by the early 17th century. Its present name was documented for the first time in the early 15th century.
The town was considered an economical and cultural centre during Antiquity and the Middle Ages with rich and various remains � stronghold walls, early-Christian basilica, medieval churches, and public buildings.
Notable works of art, such as coins from different historical epochs, golden adornments, a golden Thracian treasure of applications, have been found in the area. Between the 15th and 19th century the town becomes popular under the name Kavarna, as a Christian settlement and port for grain export. From that time remain a Turkish bath, a medieval necropolis, a bridge, fountains, Christian churches and many inscriptions.
During the Russo-Turkish War of 1877�1878 Kavarna's Christian inhabitants, Bulgarians and Gagauz alike, rebelled against the bashi-bazouks and Circassian hordes. After the liberation the town became part of the Principality of Bulgaria.
From the beginning of 20th century Kavarna achieved a rapid progress as an economical and cultural centre. The town, styled Cavarna, went under Romanian rule after the Second Balkan War in 1913 and again after the First World War in 1919 but this was met with resistance by the local Bulgarian population and its Internal Dobrujan Revolutionary Organisation. In 1940 the town was ceded back to Bulgaria by the Treaty of Craiova
