Final answer:
Cortés was the Spanish conqueror who overthrew the Aztec Empire.
Step-by-step explanation:
The Spanish conqueror that overthrew the Aztec Empire was Cortés. He arrived in Mexico in 1519 with a small army and managed to conquer the Aztecs, led by Emperor Moctezuma. Cortés formed alliances with other indigenous groups who were enemies of the Aztecs, and together they besieged the capital city of Tenochtitlan, resulting in the fall of the Aztec Empire.
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