Why Did The Mayans Build The Olmec

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The Olmec were the only ones to have a known language. They build carved heads that weighed 5 tons they had a mathematical system. They also believed in the rain god. The Mayans modified the calendar and the mathematics of the Olmec. Mayans had alliance with the Teotihuacan. Had building that was use for human sacrifice and was also a trading center. They perfected the Olmec language. Because of the drought they were forced to leave their city’s .The Aztec had a trash collective system , market and had two people bring water so they could bath, the richer even had steam baths. The Inca had no writing system but they communicated by using colored strings and knots. They had “runners” who would go and spread the word and that’s how they got in