The mother of Mesoamerican cultures was the Olmec civilization. The Olmec civilization flourished during the Mesoamerican (pre-classical) formative period, extending approximately from 1500 BCE to 400 BCE. The Olmecs constituted the first Mesoamerican civilization and established the foundations of later cultures.
The Olmec produced several major works of art, architecture, pottery, and sculpture. Most recognizable are their giant head sculptures and the pyramid in La Venta. The Olmec built aqueducts to transport water into their cities and irrigate their fields. They grew maize, squash, beans, and tomatoes. They also bred small domesticated dogs which, along with fish, provided their protein.
Although no one knows what happened to the Olmec after about 400 BCE, in part because the jungle reclaimed many of their cities, their culture was the base upon which the Maya and the Aztec built. It was the Olmec who worshipped a rain god, a maize god, and the feathered serpent so important in the future pantheons of the Aztecs (who called him Quetzalcoatl) and the Maya (to whom he was Kukulkan). The Olmec also developed a system of trade throughout Mesoamerica, giving rise to an elite class.
- U.S. History. OpenStax. Authors: P. Scott Corbett, Volker Janssen, John M. Lund, Todd Pfannestiel, Sylvie Waskiewicz, Paul Vickery. https://openstax.org/books/us-history/pages/1-introduction