Which building style did the Mississippian culture adopt from Mexican culture?

The Mississippian culture, which thrived in what is now the southeastern United States before European contact, did not directly adopt a specific building style from Mexican cultures. However, they did construct massive earthen mounds for religious and political purposes, which is a practice that also existed among Mesoamerican cultures, such as the Maya and Aztec. These mounds bear a resemblance to the pyramid structures found in Mexico but were independently developed and served different functions and spiritual beliefs.

The Mississippian mounds can be categorized as "platform mounds," flat-topped earthworks on which buildings such as temples, council houses, and chiefs' residences were constructed. The largest and most well-known Mississippian site is Cahokia, located in present-day Illinois, which includes a grand mound called Monk's Mound. While these structures share some superficial similarities with Mexican pyramids, such as serving as elevated sites for important religious and civic buildings, they were part of a different cultural tradition.