Mounds serve multiple purpose in American societies.
They were meeting places and temples
Step-by-step explanation:
The temple served as the center of the society in lots of American civilizations of the ancient time so it can be understood that the mounds which were imposing structures in their own right had some significance on that front.
The mounds served as temples or symbolic representations of the deity in the sense that it was a raised platform in the middle of the city.
It also served as the cultural center or meeting place for the city dwellers who could find it common enough to them and would gather there.