Warfare between cities eventually led to the rise of kings, called lugal s, whose authority replaced that of city-state rulers.
Warfare between cities eventually led to the rise of kings, called lugal s, whose authority replaced that of city-state rulers. Sumer became a more unified state, with a common culture and a centralized government. This led to the establishment of a bureaucracy and an army. By 2375 bc, most of Sumer was united under one king, Lugalzaggisi of Umma.