Nachos are a dish that originates from Northern Mexico.  
What are in nachos?
It is a dish with tortilla chips and it is covered in cheese.  It is typically a snack food
What kind of cheese is it covered in?
Mexican cheese, which dates back to the Spanish conquest
That sounds delicious. Where can I get Nachos?
Pretty much any place that service Mexican food.  You can even get more elaborate nacho that have more ingredients. They can be served as the main dish
What other ingredients can you put in nachos?