Which was the first big Kingdom?

The first big kingdom is often considered to be the Akkadian Empire, which emerged around 2334 BCE in Mesopotamia under the leadership of Sargon of Akkad. It was notable for uniting various city-states in the region and establishing one of the world's earliest known empires, characterized by advancements in administration, trade, and culture. The empire's influence laid the groundwork for subsequent civilizations in the area.