Cadrilater
Bulgaria ceded to Romania Southern Dobruja, lying north of a line extending from the Danube just above Tutrakan ("Turtucaia") to the western shore of the Black Sea, south of Ekrene ("Ecrene"); Southern Dobruja has an approximate area of , a population of 286,000, and includes the fortress of Silistra and the cities of Tutrakan on the Danube and Balchik ("Balcic") on the Black Sea.