What is "politarch"

Politarch (, politarches; plural πολιτάρχαι, politarchai) was a Hellenistic and Roman-era Macedonian title for an elected governor ( archon) of a city ( polis). The term had been already attested in the Acts of the Apostles (17:6,8) concerning Thessalonica, as well in modern archaeology. The institution is called Politarchate and the variant ptoliarchos appears in a poetic epigram. The first evidence of the title is dated to the reign of Perseus in Amphipolis, where the king with two politarchs honoured Artemis Tauropolos after a Thracian campaign.

The title was also used for the local commissioners of the Greek provisional government during the Greek War of Independence.