Final answer:
The world's first city-state was in Sumer, which later came under the rule of Sargon of Akkad, leading to the establishment of one of the world's first empires.
Explanation:
The world's first city-state was located in Sumer, known for its ancient cities like Uruk and Ur.
Sumerian city-states eventually fell under the rule of Sargon of Akkad, who established the first-known empire around 2334 BCE, covering regions like Syria, Anatolia, and Elam.
King Sargon of Akkad created a political entity that controlled multiple cities, marking a shift from individual city-states to centralized rule.
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