The Danube defined the region to the north, with the Carpathian Mountains to the north and east. These provinces were important to the Imperial economy as mining regions, and their general significance in the Empire of the 3rd century is indicated by the emperors who came from the region.
The Danube marked the northern boundary, with the Carpathian Mountains to the north and east. These provinces played a crucial role in the Imperial economy through their mining regions, and their significance in the Empire of the 3rd century is demonstrated by emperors coming from this region.