Final answer:
The Inca Empire primarily differed from its Aztec counterpart in terms of size, bureaucracy, and cultural influences.
Step-by-step explanation:
The Inca Empire primarily differed from its Aztec counterpart in several ways. Firstly, the Inca Empire was smaller in terms of territorial size compared to the Aztec Empire. Secondly, the Inca Empire had a highly elaborate bureaucracy to integrate its subjects, which the Aztecs did not have. And finally, while the Aztecs drew on earlier cultures in their region, the Inca Empire did not.
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