The German frontiers afford most evidence of its prosperity.
But long before that date the Order had begun to find that its true work lay on the eastern frontiers of Germany.
But of this we may be sure, that science, in obeying the law of humanity, will always labour to enlarge the frontiers of life."
In the old Prussian provinces alone there were fifty-three different customs frontiers, and German manufactures could not develop until the growth of the Zollverein brought with it commercial consolidation, internal freedom and greater homogeneity of economic conditions.
This, with the exception of a brief tenure of Cremona (1499-1512), formed her permanent territory down to the fall of the republic. Her frontiers now ran from the seacoast near Monfalcone, following the line of the Carnic and Julian and Raetian Alps to the Adda, down the course of that river till it joins the Po, and thence along the line of the Po back to the sea.