Early American Civilizations Early American civilizations were composed of four different groups of people. These four groups were composed of the Mayas, Aztecs, Incas, and the North Americans. These groups were the same in many ways, but had some differences that would distinguish their group from the others. These civilizations ruled the Americas for long period of time. These civilizations were the same in almost every way, but they had their differences to show that they were a totally different group of people. The first group that is going to be discussed is the Mayas. The Mayas were thought to be peaceful stargazers for a long time, but not until