Abstract
In a territorial sense, the southern part of the province of Pannonia (subsequently Pannonia Superior and Pannonia Inferior) encompassed a large portion of the territory of present-day northern Bosnia. However, no study has ever been written regarding the issue of the administrative organisation of this territory in the Roman period. Therefore, this paper offers for the first time a detailed analysis of written and epigraphic sources that enable us to obtain an insight into the territory of the Oseriates. Using the comparative method, the text will analyse the cultural and historic circumstances that enabled the Romans to manipulate southern Pannonian communities, depending on their administrative and legal needs. The
paper particularly focuses on two Roman administrative units formed upon the territory of Bosnian Posavina - municipium Faustinianum and Servitium. Texts carved on epigraphic monuments, written sources, and archaeological material suggest that the little-known Pannonian municipium Faustinianum was apparently located near the place where the Una river flows into the Sava. Regarding Servitium, the paper presents new findings relating to the cultural and historical development of this Roman administrative unit.
