(that we know about)
The Maya civilization existed in Central America and the Yucatán Peninsula since at least 1800 B.C. and flourished for thousands of years. The Classic period of Mayan culture lasted from 250 A.D. to around 900 A.D. The civilization consisted of more than 40 cities, each with a population between 5,000 and 50,000. The Maya civilization collapsed between A.D. 800 and 1000. The Maya were conquered and destroyed by the Spanish invaders in around 1600 A.D. The Maya civilization was never unified and consisted of numerous small states, each centered on a city ruled by a king. Egypt was taken over by Alexanda circa 325 BC so their documented civilization lasted for less than 2,200 years while the Mayans lasted 3,400 yrs! The Incas seem to receive much attention but their civilization lasted less than 200 years. While they are credited with much it seems to me that they likely inherited most of the amazing developments from earlier civilizations.