In the 4th century BC Thessaly became dependent on Macedon and many served as vassals, while in 148 BC the Romans formally incorporated Thessaly into the province of Macedonia, though in 300 AD Thessaly was made a separate province with its capital at Larissa.
BC Thessaly became dependent on Macedon. This was in the 4th century. Many served as vassals. The Romans formally incorporated Thessaly into the province of Macedonia. This was in 148 BC. AD Thessaly was made a separate province with its capital at Larissa. This was in 300.