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
Tripoli passed into the hands of the rulers of Cyrenaica (a Greek colony on the North African shore, east of Tripoli, halfway to Egypt), although the Carthaginians later wrested it from the Greeks. By the latter half of the 2nd century BC it belonged to the Romans, who included it in their province of Africa, and gave it the name of "Regio Syrtica". Around the beginning of the 3rd century AD, it became known as the Regio Tripolitana, meaning "region of the three cities", namely Oea ("i.e.", modern Tripoli), Sabratha and Leptis Magna. It was probably raised to the rank of