Pannonia

Pannonia (, ) was a province of the Roman Empire bounded on the north and east by the Danube, on the west by Noricum and upper Italy, and on the south by Dalmatia and upper Moesia. It included the modern regions of western Hungary, western Slovakia, eastern Austria, northern Croatia, north-western Serbia, northern Slovenia, and northern Bosnia and Herzegovina. The northern and eastern boundary line of Pannonia was formed by the River Danube.

== Background == In the Early Iron Age, Transdanubia was inhabited by the Pannonians or Pannonii, a collection of Illyrian tribes. The Celts invaded the region during the Late Iron Age, and Gallo-Roman historian Pompeius Trogus wrote that they faced heavy resistance from the locals, which eventually prevented them from overrunning the southern part of Transdanubia. Some tribes advanced as far as Delphi, with the Scordisci settling in Syrmia (279 BC) upon being forced to withdraw. Additionally, the arrival of the Celts in Transdanubia disrupted the flow of amber from the Baltic Sea region, through the Amber Road, to the Illyrians. They founded many villages. Those that held prominent economic significance developed into oppida. Independent tribes minted their own coins with the faces of their leaders. These were at first modelled on Macedonian and, later, Roman currency.