languages spoken by their ancestors are still found in the Awjila language of the oasis of Awjila. The ancient Berbers founded a number of cities and settlements, both on the coast and in the inland oases. Ancient Egyptian Era Egyptian records mention that during the New Kingdom of Egypt (thirteenth century BC), the Libu and Meshwesh tribes of Cyrenaica made frequent incursions into Egypt. Greek colonization Cyrenaica was colonized by the Greeks beginning in the seventh century BC when it was known as Kyrenaika. The first and most important colony was that of Cyrene, established in about 631 BC by colonists from the Greek island of Thera, which they had abandoned because of a severe famine. Their commander, Aristoteles, took the Libyan name Battos. His descendants, known as the Battiad dynasty, persisted in spite of severe conflict with Greeks in neighboring cities. The eastern portion of the province, with no major population centers, was called Marmarica; the more important western portion was known as the Pentapolis, as it comprised five cities: Cyrene (near the modern village of Shahat) with its port of Apollonia (Marsa Susa), Arsinoe or Taucheira (Tocra), Euesperides or Berenice (near modern Benghazi), Balagrae (Bayda) and Barce (Marj) – of which the chief was the eponymous Cyrene. The term "Pentapolis" continued to be used as a synonym for Cyrenaica. In the south, the Pentapolis faded into the Saharan tribal areas, including the pharaonic oracle of Ammonium. The region produced barley, wheat, olive oil, wine, figs, apples, wool, sheep, cattle and silphium, a herb that grew only in Cyrenaica and was regarded as a medicinal cure and aphrodisiac. Cyrene became one of the greatest intellectual and artistic centers of the Greek world, famous for its medical school, learned academies and architecture, which included some of the finest examples of the Hellenistic style. The Cyrenaics, a school of thinkers who expounded a doctrine of moral cheerfulness that defined happiness as the sum of human pleasures, were founded by Aristippus of Cyrene. Other notable natives of Cyrene were the poet Callimachus and the mathematicians Theodorus and Eratosthenes. Persian rule In 525 BC, after conquering Egypt, the Achaemenid (Persian) army of Cambyses II seized the Pentapolis, and established a satrapy (Achaemenid Persian province) over parts of the region for about the next two centuries. Hellenistic era The Persians were followed by Alexander the Great in 332 BC, who received tribute from the