I love eating pizza, a traditional Italian dish consisting of dough and tomato sauce.  Do you enjoy pizza?
yes I eat it all the time
So it turns out the pizza we eat today is called "modern" pizza, which was first invented in Naples and now has become a staple dish throughout the world.
as opposed to what other pizza
You could say it's the "traditional" pizza, which was primarily made out of flat bread, also known as "panis focacius",.  The shape of it would be in a shape of a bread and not your round pizzas you see today.
so when did modern pizza start
The modern pizza was invented in the late 18th century, when tomato sauce was added to the pizza.  
did you know that pepperoni pizza is very different in italy?
List of pizza varieties by country
Pizza, a staple of Italian cuisine, has become one of a most recognizable and popular dishes worldwide. Its widespread adoption into other cuisines is traced to early 20th century.
A survey from 2004 showed that Norwegians ate the most frozen pizza (5.4 kg/person*year), followed by Germans.
Asia.
Asia China.
The presence of pizza restaurant chains in China has contributed to a significant increase in pizza consumption in the country. Pizza Hut opened its first store in
called pizzettas.
The term "pizza" was first recorded in the 10th century in a Latin manuscript from the Southern Italian town of Gaeta in Lazio, on the border with Campania. Modern pizza was invented in Naples, and the dish and its variants have since become popular in many countries. It has become one of the most popular foods in the world and a common fast food item in Europe and North America, available at pizzerias (restaurants specializing in pizza), restaurants offering Mediterranean cuisine, and via pizza delivery