Not to be confused with the swine feed pushed at 7-Eleven and sports games, a true nacho uses real cheese and toppings beyond pickled jalapeno. And yes, it was first created for gringos in the 1940s.
Over the years, Americans really sank their teeth into this dish and made it their own — complete with piles and piles or extras like meat, sour cream, beans, salsa, more meat, more sour cream, extra cheese, chilies, even more cheese, etc.