Board Thread:Speculation House/@comment-4010415-20140802105040/@comment-4830106-20140816223630

There's also the possbility that humans have been unable to completely subjugate the globe just because they're too busy fighting other humans. Seeing as how all the kingdoms, especially Atlas seem to have a slight imperialistic drive, it's entirely possible that the human kingdoms are more wary of each other than any sort of external or general foe.

Source:  EUROPE.