Philip returned to Macedonia and begun preparations for a complete expulsion of the remaining Greek colonies on Macedonian land. In 348 BC, the Macedonian army attacked the Chalcidice peninsula and defeated the city-state of Olynthus. Like Methone, Olynthus and the other 31 Greek cities in Chalcidice were utterly demolished and razed to the ground, their Greek citizens sold as slaves, and their land distributed to the Macedonians. Among these Greek cities was Stageira, the birthplace of the Greek philosopher Aristotle. The whole of Chalcidice peninsula was annexed to Macedonia, marking an end of Greek settlements on Macedonian soil.