Quote:
The Empire spread all but unchallenged as their airships and machina conquered first the rest of Ilsabard and then the majority of the eastern continent of Othard. It was in the east that the Garleans first encountered the awe-inspiringly destructive capabilities of beings known as primals, otherworldly entities whose physical presence in Hydaelyn is maintained through the consumption of aether, a substance thought to be the source of all life and magic.
And, as it goes on to say:
Quote:
With a critical foothold in Eorzea firmly established, Garlemald was prepared to begin their conquest in earnest. Ancient mythology revered Silvertear Lake, deep in Aldenard’s forest region of Mor Dhona, as a profound focus of spiritual energy, earning it such attributions as the source of all water and the fount of all magic. Measurements of the land’s aetheric flow led Garlean researchers to believe that the area was a massive convergence of aether, if not the center of a global network. If the beast tribes of Eorzea learned to utilize this abundance to summon their eikon gods, the Empire would be drawn into another prolonged and onerous campaign against primals.
So, yeah, Primals may be an Eorzean thing now, but the Empire has encountered and fought against them before, and even based their entire Eorzean campaign off those past encounters.