To honor their rulers and please their gods
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astronomy
The economy of early civilizations was based around agriculture.
The Nile River was the axis of two early African civilizations
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Cahokian.
Anasazi
Anasazi
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Mayan and Aztec civilizations of Central and South America
Many early American civilizations, such as the Maya, Aztec, and Inca, built pyramids as religious and ceremonial structures to honor their gods and rulers. Additionally, pyramids served as a way to symbolize power, hierarchy, and control over the surrounding landscape. The construction of pyramids also required a large labor force, which helped to organize and unify these early civilizations.
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.
Atlantic ocean
The Incas had the largest empire in early American civilizations.
astronomy