The Vampire Nation of Prussilvania was situated to the west of Primaria Theocracy and southwest of the Dixon Empire. An isolated country ruled by bloodsucking races of vampires.
More than half of its land borders are surrounded by some naturally occurring barriers.
First off, the whole extent of the country's eastern border was planted with trees from the southwestern portion of the Vagoth Forest. Those green lands kept them separated from the faithful followers of the Theocracy.
At the southern border of Prussilvania, a long range of mountains served as a division between the vampires and the dwarves. In actuality, those lines of mountains were only a fraction of the total length of the Rashi Mountain Range.
Those mountains were so high and rough that they could not serve as a trading route between the two races. But it doesn't matter since vampires and dwarves don't trade that much.