From Wikipedia https://en.wikipedia.org/wiki/Slavery_in_ancient_Greece
"By the rules of war of the period, the victor possessed absolute rights over the vanquished, whether they were soldiers or not. Enslavement, while not systematic, was common practice. Thucydides recalls that 7,000 inhabitants of Hyccara in Sicily were taken prisoner by Nicias and sold for 120 talents in the neighbouring village of Catania. Likewise in 348 BC the population of Olynthus was reduced to slavery, as was that of Thebes in 335 BC by Alexander the Great and that of Mantineia by the Achaean League."
On Alexander at Thebes we discussed in
http://stretchingtheboundaries.blogspot.com/2018/07/sikandar-destroyer-thebe.html
The same behavious had Alexander for other populations.
The same behavious had Alexander for other populations.
About Olynthus, it was Philip that destroyed the town. https://en.wikipedia.org/wiki/Olynthus
Come dire: Tale padre, tale figlio.
"Olynthus was at first in alliance with Philip. Subsequently, in alarm at the growth of his power, it concluded an alliance with Athens. Olynthus made three embassies to Athens, the occasions of Demosthenes's three Olynthiac Orations. On the third, the Athenians sent soldiers from among its citizens. After Philip had deprived Olynthus of the rest of the League, by force and by the treachery of sympathetic factions, he besieged Olynthus in 348. The siege was short; he bought Olynthus's two principal citizens, Euthycrates and Lasthenes,who betrayed the city to him. He then looted and razed the city and sold its population—including the Athenian garrison—into slavery. According to the latest researches only a small area of the North Hill was ever re-occupied, up to 318, before Cassander forced the population to move in his new city of Cassandreia.
Though the city was extinguished, through subsequent centuries there would be men scattered through the Hellenistic world who were called Olynthians."