Final answer:
The Mississippian culture constructed thousands of earthworks known as mounds. These mounds served various purposes, including burial, living, and worship.
Step-by-step explanation:
The Mississippian culture constructed thousands of earthworks, commonly known as mounds. These mounds served different purposes, such as burial sites for the elite, living platforms for the chief and his family, and centers of worship. The largest and most important towns in the chiefdoms had the highest number of mounds.