Who was the first ruler of history?

The title of the "first ruler of history" is often attributed to Sargon of Akkad, who established the Akkadian Empire around 2334 BCE in Mesopotamia. He is noted for unifying various city-states under a centralized authority and is considered one of the earliest known emperors. However, there were likely earlier leaders and chieftains, but Sargon's reign is the first to be documented in historical records.