Ancient Libya valley, Cowper says, "There had been originally no less than eighteen or twenty megalithic trilithons, in a line, each with its massive altar placed before it." In ancient times, the Phoenicians and Carthaginians, the Persian Achaemenid Empire ("see Libya (satrapy)"), the armies of Alexander the Great and his Ptolemaic successors from Egypt, then Romans, Vandals, and local representatives of the Byzantine Empire ruled all or parts of Libya. The territory of modern Libya had separate histories until Roman times, as Tripoli and Cyrenaica. Cyrenaica, by contrast, was Greek before it was Roman. It was also known as Pentapolis, the "five
Arcadia (ancient region) of the Eurotas river. To the south-west, the border with Messania ran along the tops of Mount Nomia, and Mount Elaeum, and from there the border with Elis ran along the valleys of the Erymanthos and Diagon rivers. Most of the region of Arcardia was mountainous, apart from the plains around Tegea and Megalopolis, and the valleys of the Alpheios and Ladon rivers. The Arcadians were an ancient Greek tribe which was situated in the mountainous Peloponnese. It is considered one of the oldest Greek tribes which settled in Greece and it was probably a relative tribe of the proto-Greeks