As Daco-Romanian-speakers, the Vlachs have a connection to the Roman heritage in Serbia. Following Roman withdrawal from the province of Dacia at the end of the 3rd century, the name of the Roman region was changed to Dacia Aureliana, and (later Dacia Ripensis) spread over most of what is now called Serbia and Bulgaria, and an undetermined number of Romanized Dacians (Carpi) were settled there. Strong Roman presence in the region persisted through the end of Justinian's reign in the 6th century.