Mexico – The World Factbook

The site of several advanced Amerindian civilizations – including the Olmec, Toltec, Teotihuacan, Zapotec, Maya, and Aztec – Mexico was conquered and colonized by Spain in the early 16th century. Administered as the Viceroyalty of New Spain for three centuries, it achieved independence early in the 19th century.

https://www.cia.gov/the-world-factbook/countries/mexico/