The Mississippian society ranged from Florida to lower Canada, and from the East coast of North America to west of the Mississippi River.
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To honor their rulers and please their gods
astronomy
The economy of early civilizations was based around agriculture.
The Nile River was the axis of two early African civilizations
Cahokian.
The Incas had the largest empire in early American civilizations.
Anasazi
Anasazi
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Mayan and Aztec civilizations of Central and South America
The Native American civilizations such as the Mayan & Aztec are known for their very accurate calendars.
Aztec and Mayan civilizations did
Many of the most successful great early American civilizations built large cities along water. Typically these cities were built along the Atlantic Ocean.
Inca
To honor their rulers and please their gods
Atlantic ocean