Mexican DNA: Who were the Aztecs?

(Beyond Explorer) DNA just revealed who the Indigenous "Aztec" (formerly "Mexica") Native Americans really were with an Austral-Asian signature from 15,000 years BP and a large mixing ground with waves of migration. Who were the Olmecs with their giant heads? Africans who came by boat or dark-skinned Indigenous tribes from the region?

• Tenochtitlan (Mexico City of the Mexica/Aztecs)
• Xaltocan, an ancient city-state
• Aztecs and their language (not Spanish) Nahuatl
• Beyond Explorer AI; Crystal Quintero, Pfc. Sandoval (eds.), Wisdom Quarterly