I) fortified the villas and relocated barbarians to the border regions. In 358 they won a great victory over the Sarmatians, but raids didn't stop. In 401 the Visigoths fled to the province from the Huns, and the border guarding peoples fled to Italia from them, but were beaten by Uldin in exchange for the transferring of Eastern Pannonia. In 433 Rome completely handed over the territory to Attila for the subjugation of the Burgundians attacking Gaul. Post-Roman During the Migration Period in the 5th century, some parts of Pannonia were ceded to the Huns in 433 by Flavius Aetius, the magister militum of the Western Roman Empire. After the collapse of the Hunnic empire in 454, large numbers of Ostrogoths were settled by Emperor Marcian in the province as foederati. The Eastern Roman Empire controlled southern parts of Pannonia in the 6th century, during the reign of Justinian I. The Byzantine province of Pannonia with its capital at Sirmium was temporarily restored, but it included only a small southeastern part of historical Pannonia. Afterwards, it was again invaded by the Avars in the 560s, and the Slavs, who first may settled c. 480s but became independent only from the 7th century. In 790s, it was invaded by the Franks, who used the name "Pannonia" to designate the newly formed frontier province, the March of Pannonia. The term Pannonia was also used for Slavic polity like Lower Pannonia that was vassal to the Frankish Empire. Between the 5th and the 10th centuries, the romanized population of Pannonia developed the Romance Pannonian language, mainly around Lake Balaton in present-day western Hungary, where there was the keszthely culture. This language and the related culture became extinct with the arrival of the Magyars. Cities and auxiliary forts The native settlements consisted of (cantons) containing a number of (villages), the majority of the large towns being of Roman origin. The cities and towns in Pannonia were: Now in Austria: Carnuntum (Petronell, Bad Deutsch-Altenburg) Vindobona (Vienna) Now in Bosnia and Herzegovina: Saldae (Brčko) Serbinum or Servitium (Gradiška) Castrum and Canabea (Doboj) Now in Croatia: Ad Novas (Zmajevac) Andautonia (Ščitarjevo) Aqua Viva (Petrijanec) Aquae Balisae (Daruvar) Certissa (Đakovo) Cibalae (Vinkovci) Cornacum (Sotin) Cuccium (Ilok) Iovia or Iovia Botivo (Ludbreg) Marsonia (Slavonski Brod) Mursa (Osijek) Siscia (Sisak) Teutoburgium (Dalj) Now in Hungary: Ad Flexum (Mosonmagyaróvár) Ad Mures (Ács) Ad Statuas (Vaspuszta) Ad Statuas (Várdomb) Alisca (Szekszárd) Alta