Tacos are some of my favorite food, especially really authentic ones.
I really enjoy mexican food. mexican food actually started about 9000 years ago
That long? That's crazy! What did they make back then?
Some other groups of food included Olmec, Otomi, Mixtecand Toltec
Interesting, were these really similar to mexican food?
Olmecs
The Olmecs () were the earliest known major civilization in Mesoamerica following a progressive development in Soconusco. They lived in the tropical lowlands of south-central Mexico, in the present-day states of Veracruz and Tabasco. It has been speculated that the Olmecs derive in part from neighboring Mokaya or Mixe–Zoque.
The Olmecs flourished during Mesoamerica's formative period, dating roughly from as early as 1500 BCE to about 400 BCE. Pre-Olmec cultures had flourished in the area since about 2500 BCE
Mexican cuisine
Mexican cuisine began about 9000 years ago, when agricultural communities such as the Maya formed, domesticating maize, creating the standard process of corn nixtamalization, and establishing their foodways. Successive waves of other Mesoamerican groups brought with them their own cooking methods. These included the Olmec, Teotihuacanos, Toltec, Huastec, Zapotec, Mixtec, Otomi, Purépecha, Totonac, Mazatec, and Mazahua. 
The Mexica establishment of the Aztec Empire created a multi-ethnic society where many different foodways became infused. The staples are