basically covers what I was saying. Who invented pizza? Depends on how you define pizza. Flat bread = ancient Egypt, Turkey, and Mesopotamia. This flat bread made its way to anceint Greece, where they put toppings on it such as olive oil and spices and called it "pita." Greeks colonized Neapolis (Napoli, Naples), bringing their pita with them. Can't really say it was invented there if they brought it from Greece if we're going to use your rules, right? It was a popular food among the poor, flat bread with toppings on it. Over time the pronunciation was corrupted from pita to pizza. Neapolitans tried out different toppings like mozzarella, tomato, and basil (little globs of each). Italians brought this food to Little Italy in New York City. In the early 20th century it became popular there, and those immigrants started making a food that would be exported all over the world.
this is more like what you would find in Naples. It's more like soup than pizza (follow the link). and it is NOT what most people think of when they think of pizza, because pizza was definitely invented in New York City.