Libya Greek cities were established in the area that became known as Cyrenaica. In 525 BC the Persian army of Cambyses II overran Cyrenaica, which for the next two centuries remained under Persian or Egyptian rule. Alexander the Great was greeted by the Greeks when he entered Cyrenaica in 331 BC, and Eastern Libya again fell under the control of the Greeks, this time as part of the Ptolemaic Kingdom. After the fall of Carthage the Romans did not immediately occupy Tripolitania (the region around Tripoli), but left it instead under control of the kings of Numidia, until the coastal cities
Achaea (ancient region) was a province covering much of central and southern Greece. This is the Achaea referenced in the New Testament (e.g., Acts 18:12 and 19:21; Romans 15:26 and 16:5). However, Pausanias, writing in the 2nd century AD, devotes one of the books of "Description of Greece" to the ancient region of Achaea, showing that the name, locally at least, still preserved the use from the Classical period. The name, Achaea, was later used in the crusader state, the Principality of Achaea (1205–1432), which comprised the whole Peloponnese, thus more closely following Roman use. The modern Greek prefecture of Achaea is largely