The Macedonian Question ? 
Macedonia continued to be a Greek-land under the Epigonoi (the successors of Alexander the Great) and for some two centuries was the core of larger state units ruled by Macedonian kings. It was only after the decisive battle of Pydna in 168 B.C. that Macedonia ceased to exist as an independent state and came under Roman domination. Its territories were divided into four semi-autonomous regions.
Despite Roman rule, the Macedonian provinces prospered, and attracted new colonists from the East and from Italy. For the first time, Jewish communities appeared. However, as can be seen from the inscriptions, the Roman colonists were gradually hellenised.
During the 3rd century A.D. there were successive invasions of Goths and other tribes related to them, but these attacks were beaten off and did not lead to ethnological adulteration. In 324 A.D., Byzantium became the capital of the Eastern Roman Empire. This had a positive effect on the further development of Macedonia and particularly on that of its capital, Thessaloniki, which soon grew to the point where it was regarded as the second most important city in the Byzantine Empire.