The Balkan situation was far from secure, with the Odrysians and Scythians only recently defeated and with the Triballi still defiant. Yet Philip was… - N. G. L. Hammond

There were two parts of the Greek-speaking world at this time which did not suffer from revolution and did not seek to impose rule over the city states. In Epirus there were three clusters of tribal states, called Molossia, Thesprotia and Chaonia[...]the other part of the Greek-speaking world extended from Pelagonia in the north to Macedonia in the south. It was occupied by several tribal states, which were constantly at war against Illyrians, Paeonians and Thracians.

The toponyms of the Macedonian homeland are the most significant. Nearly all of them are Greek.

As subjects of the king the Upper Macedonians were henceforth on the same footing as the original Macedonians, in that they could qualify for service in the King's Forces and thereby obtain the elite citizenship. At one bound the territory, the population and wealth of the kingdom were doubled. Moreover since the great majority of the new subjects were speakers of the West Greek dialect, the enlarged army was Greek-speaking throughout.