Chicken or turkey?

[Geno]

Although the term taco comes from a Spanish word meaning “light snack”, the taco itself had its origins in pre-Hispanic times, when the Aztecs and other groups in their empire, using corn tortillas much as Europeans used bread, rolled the tortillas or broke them into pieces to scoop up food. The food being scooped was, of course, different in each region and the street taco as we know it today evolved from the rural areas of Mexico.

So, in a way, the taco did and didn't originate in Mexico. It originated in what is now Mexico, but it wasn't Mexico at the time. One thing's for sure though: it wasn't a US creation.