From approximately AD 900 to 1600, Ancient Mississippian culture dominated today\'s southeastern United States.
The remn.
Mississippian Chiefdoms built fortified towns with massive earthen structures used as astrological monuments and burial grounds.
These Native American societies, known more popularly as moundbuilders, had populations that numbered in the thousands, produced vast surpluses of food, engaged in longdistance trading, and were ruled by powerful leaders who raised large armies.
From approximately AD 900 to 1600, Ancient Mississippian culture dominated today\'s southeastern United States