It was the rich natural resources that particularly awakened the Romans' interest in their northern neighbours. And in the late second century BC, when several Celtic tribes united to form a "kingdom", the "regnum Noricum", under the leadership of the Norici around the area of what is now Austria, it was assumed by the young state of Rome via a friendship treaty. The dependence of the Eastern Alpine region on Rome was thus determined.
Flavia Solva (now Wagna, Leibnitz) was first declared a town under Emperor Vespasian, but even as early as the beginning of the first century AD, the Styrian region's relationship with Rome was very good. The main part of what is now Styria (approximately from the Drau Valley to the districts of Leoben, Bruck an der Mur and Mürzzuschlag) were part of the territory of Flavia Solva, which is today the only Roman town in Styria.
It is assumed that the beginnings of the Styrian iron industry were under the Romans at Erzberg. There are also many legends, such as that of the water spirit of the Leopoldsteinersee lake, that confirm this theory.