The Mayan civilization lasted for almost 3,500 years. It was known for its monumental towns and for developing the first complete hieroglyphic system of writing in pre-Columbian America. The Mayan civilization was also known for its high level of mathematical knowledge, surpassing the Romans and ancient Greeks in this respect. read more
Many pre-Columbian civilizations established permanent or urban settlements, agriculture, and complex societal hierarchies. In North America, indigenous cultures in the Lower Mississippi Valley during the Middle Archaic period built complexes of multiple mounds, with several in Louisiana dated to 5600–5000 BP (3700 BC–3100 BC). read more