With the Congress of Berlin in 1878 , Northern Thrace was incorporated into the semi-autonomous Ottoman province of Eastern Rumelia , which united with Bulgaria in 1885 . The rest of Thrace was divided among Bulgaria , Greece and Turkey at the beginning of the 20th century , following the Balkan Wars , World War I and the Greco-Turkish War . In Summer 1934 , up to 10.000 Jews were maltreated , bereaved and then forced to quit the region ( see 1934 Thrace pogroms )
1934 Thrace pogroms
1934 Thrace pogroms
Thrace