The Ganrimb Kingdom was an offshoot that had split off from the Brimgan Empire. When Fhoong Brimgan lost the fight for the throne, he and his supporters fled the Empire.
They then founded the Ganrimb Kingdom, taking advantage of the region's sense of safety. To ensure they remained safe, Fhoong Brimgan captured four Silver Grade Pranic Beasts and used them to forge the region as it is today.
The Ganrimb Kingdom had invested heavily into the four Silver Grade Pranic Beasts, reaping endless benefits. Of course, without their support, the region's stability would collapse within a year, causing the dangerous hordes of Pranic Beasts from beyond the border to flood in.
The scroll talked about it in detail. Of course, Fhoong Brimgan was an ambitious individual. He wasn't content with simply surviving. He wanted to excel. And the last line of the scroll quoted his ambitions.