Newcomers, they worship gods similar to the older races of Dwarves and Elves but with names in the common tongue and disposition more suited to humans. They've built an empire now and have mastered the world.
Humans come in all sorts and shapes, but locally, they either follower of the old ways, or new ways the distinction being that the empire conquered those who were in the valley before making them mostly second class citizens. The new empire is controlled by the Senate and stratified into classes starting Peregrini (free born of the conquered lands) and including Plebians, Patricians, Equestrians and at the pinnacle Senators.