What civilization's influence could be found in both the maya and aztec civilization?

Olmec civilization's influence could be found in both the .maya and Aztec civilization, Olmec civilization was probably the most important culture in the history of Precolumbian Mesoamerica.

Explanation:
Recent analysis suggests that the Olmec had their roots in early farming cultures of Tabasco, that began between 5100 BCE and 4600 BCE. These shared similar basic food crops and technologies of the later Olmec civilization. The Olmec culture is believed to possess concluded around four hundred B.C.
The Aztecs and Mayans were 2 Mesoamerican civilizations that had a lot of in common. ... each civilization discovered 365-day calendars with similar markings and day/month symbols. They additionally each loved a pantheon of gods throughout nonsecular ceremonies, a number of that concerned human sacrifice.