What people in Sumeria eventually became so powerful that they became king and ruled large areas?

In Sumeria, the emergence of city-states led to the rise of powerful figures known as priests and military leaders. Over time, these individuals consolidated power, often transitioning from religious authority to political rulers. Eventually, strong leaders, often referred to as kings, established dynasties and expanded their control over larger territories, solidifying their authority through military conquest and administrative organization. This shift marked the evolution of governance in Sumerian society.