Someone looked at a perfectly good burger and thought yeah but what if we melted cheese on it.
Fun fact: The U.S. trademark for the word "cheeseburger" was granted to a Denver restaurant in 1935.
Greeks worked out that meat on a stick plus pita plus chips is a perfect meal.
Fun fact: Stone grills for skewered meat dating to 1700 BC were excavated from the ruins of Santorini.