Which Akkadian king is known for conquering Sumerian city-states and establishing an empire?

The Akkadian king known for conquering Sumerian city-states and establishing an empire is King Sargon. He is recognized as the first ruler to create a multi-ethnic centralized empire in Mesopotamia around the 24th century BCE. Sargon successfully united the various Sumerian city-states under his rule, utilizing military conquests and strategic alliances. His establishment of the Akkadian Empire marked a significant turning point in ancient history, as it laid the groundwork for future empires in the region.

Sargon's legacy includes the spread of Akkadian culture and language, which became dominant in the region, influencing subsequent civilizations. His reign is often highlighted for its innovations in administration and military organization, setting a precedent for later rulers. Thus, King Sargon stands out as a pivotal figure in the emergence of structured empires in early history.