The Shiradi Empire was the first great nation to arise in the eastern Three Seas, where it ruled much of what is now Cengemis, Conriya, and High Ainon for much of Far Antiquity. By c. 500 a number of Hamori Ketyai tribes had settled the length of the River Sayut and the Secharib Plains, becoming more sedentary and socially stratified as they exploited the rich cereal yields afforded by the fertile soils of the region. But unlike Shigek, where the first God-Kings were able to unify the Sempis River Valley quite early, Seto-Annaria, as it came to be called (after the two most dominant tribes), remained a collection of warring city-states. Eventually the balance of power shifted to the north, to the city-state of Shir on the River Maurat, and sometime in the thirteenth century it managed to s