What were the key cultural and scientific accomplishments of early mesoamerican cultural groups?

The accomplishments of Mesoamerican people were extremely varied and abundant. Many of these civilizations were extremely advanced, and their accomplishments are evidence of the importance of these groups to world history.

For example, the Olmec built the first known pyramids in America. They also invented the Long Count calendar and produced vulcanized rubber. The Inca developed complex hydraulic systems, as well as extensive road systems in very difficult terrain. The Mayans were skilled astronomers and mathematicians. The Aztecs developed artificial islands to be employed as land for farming. They also built double aqueducts. Finally, they provided compulsory education to all children and were able to perform surgeries.

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.

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