Settlements similar to or like Megaris

The ancient Greek tribes were groups of Greek-speaking populations living in Greece, Cyprus, and the various Greek colonies. They were primarily divided by geographic, dialectal, political, and cultural criteria, as well as distinct traditions in mythology and religion. Wikipedia

Provided as an overview of and topical guide to ancient Greece: Ancient Greece – Wikipedia

The regions of ancient Greece were areas identified by the ancient Greeks as geographical sub-divisions of the Hellenic world. These regions are described in the works of ancient historians and geographers, and in the legends and myths of the ancient Greeks. Wikipedia

Incomplete list of ancient Greek cities, including colonies outside Greece. Note that there were a great many Greek cities in the ancient world. Wikipedia

Timeline of ancient Greece from its emergence around 800 BC to its subjection to the Roman Empire in 146 BC. For earlier times, see Greek Dark Ages, Aegean civilizations and Mycenaean Greece. Wikipedia

Ancient kingdom on the periphery of Archaic and Classical Greece, and later the dominant state of Hellenistic Greece. Founded and initially ruled by the royal Argead dynasty, which was followed by the Antipatrid and Antigonid dynasties. Wikipedia