The five Human Slaver Kingdoms (known as the Five Kingdoms) of the Old World (the island continent Terranse) have held sway over much of the Mazari mainland for generations, but the colonies and settlements of the mainland flourished largely on their own prior to Independence, mostly due to the security afforded by the presence of the old Dwarven city of Axes Bithtat, now Riot's Gate.
Orindo, Gallant, Hespan, Zulary and Trudor have either allied or competed with one another viciously for years on the island continent of Terranse, only occasionally pausing in their feuds and competitions with one another to disdain other more foreign Human nations: the basket case former colonies of Amtlan, the south sea island tribals of the Nesyian Arch archipelego, the sun worshipping Azmaiiy, the zealots of the Monotheocrate Order, and the countless little countries and principalities whose names those of the Five Kingdoms can seldom be bothered to learn.
The multiracial state that has emerged on the Mazari mainland is an even greater mystery to the humans of Terranse than the depraved and decadent River Baronies. At least most of the Baronies that can still offer at least token tribute to their patron states, and, moreover, most still depend on slavery. This makes them easier to understand and, of course, to influence. The Sunterranse Federation is much more troubling for all this bizarre talk about abolition, freedom, democracy and equality.
Humans are much more far flung than the Mazari, Amitlan and Terrans. Their are legends of ancient empires beyond the Wilderlands made all the more tenable by the sudden arrival of the Dragon Fleet of distant Hankuo.