Northern Dobruja

Northern Dobruja ( or simply ; , Severna Dobrudzha) is the part of Dobruja within the borders of Romania. It lies between the lower Danube River and the Black Sea, bordered in the south by Southern Dobruja, which is a part of Bulgaria. History Around 600 BC, the Greeks colonized the Black Sea shore and founded numerous fortresses: Tomis (today's Constanța), Callatis, Histria, Argamum, Heracleea, Aegysus. Greeks have commerce with Dacians who lived there on main land. Dobruja became a Roman province after conquest of Dacian Tribes. One of the best preserved remnants of this period is the Capidava citadel. Between the 7th and 14th century, Dobruja was part of the First Bulgarian Empire and the Second Bulgarian Empire.