The internal organization of Sargon's realm is poorly known. Little by little, the local ENSI, deprived of their independence, were replaced with Akkadian governors devoted to the advancement of their monarch. Moreover, Sargon launched an ambitious program of territorial expansion to the northwest. Marching up the Euphrates, he' received kingship over this region of Syria from the god Dagan of Tuttul (Tell Bila) at the mouth of the Balikh River. But this campaign to the Mediterranean was nothing more than a military raid. His son Rimush, who succeeded him, faced a general rebellion in Sumer; its suppression caused the death of thousands.