Final answer:
Moundbuilding is the aspect of Mississippian culture that provides evidence of permanent settlements.
Step-by-step explanation:
The aspect of Mississippian culture that provides evidence of permanent settlements is moundbuilding. The Mississippian people constructed thousands of earthen mounds, which served various purposes. Some mounds were used as burial sites for the elite, while others were inhabited by the chief and his family. The presence of these large mounds indicates that the Mississippian society had settled communities.