Agrigento (aɡriˈdʒɛnto; Girgenti dʒɪɾˈdʒɛndɪ or Giurgenti dʒʊɾˈdʒɛndɪ; Ἀκράγας; Agrigentum or Acragas; Kirkant, or جرجنت Jirjant) is a city on the southern coast of Sicily, Italy and capital of the province of Agrigento. It was one of the leading cities of Magna Graecia during the golden age of Ancient Greece. Akragas was founded on a plateau overlooking the sea, with two nearby rivers, the Hypsas and the Acragas, after which the settlement was originally named. A ridge, which offered a degree of natural fortification, links a hill to the north called Colle di Girgenti with another, called Rupe Atenea, to the east. According to Thucydides, it was founded around 582-580 BC by Greek colonists from Gela in eastern Sicily, with further colonists from Crete and Rhodes. The founders (oikistai) of the new city were Aristonous and Pystilus. It was the last of the major Greek colonies in Sicily to be founded. The territory under Akragas's control expanded to comprise the whole area between the Platani and the Salso, and reached deep into the Sicilian interior. Greek literary sources connect this expansion with military campaigns, but archaeological evidence indicates that this was a much longer term process which reached its peak only in the early fifth century BC. Most other Greek settlements in Sicily experienced similar territorial expansion in this period. Excavations at a range of sites in this region inhabited by the indigenous Sican people, such as Monte Sabbucina, Gibil-Gabil, Vasallaggi, San Angelo Muxano, and Mussomeli, show signs of the adoption of Greek culture. It is disputed how much of this expansion was carried out by violence and how much by commerce and acculturation. The territorial expansion provided land for the Greek settlers to farm, native slaves to work these farms, and control of the overland route from Acragas to the city of Himera on the northern coast of Sicily. This was the main land route from the Straits of Sicily to the Tyrrhenian Sea and Acragas' control of it was a key factor in its economic prosperity in the sixth and fifth centuries BC, which became proverbial.