Starting from the historical work of Memnon’s Heracleia, which has been handed down to us by Photius’ excerpta, we can reconstruct role polis Heracleia Pontica, in complex period after Alexander’s III death. With this paper, I will analyse tyrannical period, and particular Dionysius’ tyranny. During his tyranny, Dionysius Pontica was able realize a network relationships; he succeeded making cit...