Answer:
A: They were independent of one another.
Explanation:
Contrary to popular belief, the Maya were not a single people, but several peoples (ethnicities) who had the same linguistic and cultural origin, and inhabited Mesoamerica.
Sargon did not move from south to north to conquer Sumer. FALSE.
Maybe, depends what you looking for
Answer:
A. They limit human work in hazardous enviroments.
Explanation: