Many among the Romanised and Hellenised Paeonian, Illyrian and Thracian population of Macedonia were assimilated by the Slavs, but pockets of tribes that fled to the mountains remained independent.
Many among the Romanised and Hellenised Paeonian, Illyrian and Thracian population of Macedonia were assimilated by the Slavs. Pockets of tribes remained independent. These tribes fled to the mountains.