Feb. 9 is National Pizza Day and businesses across the world are celebrating with discounted pizza and other specials. 

Iran PressAmerica: There was National Pizza Week in January, and October is National Pizza Month. Yes, there's National Cheese Pizza Day and National Pepperoni Pizza Day. 

This year, you're going to find special offers from favorites like Little Caesars, Mountain Mike's Pizza, Pizza Hut, and so many more places.

Pizza is the world’s favorite fast food. We eat it everywhere – at home, in restaurants, on street corners. Some three billion pizzas are sold each year in the United States alone, an average of 46 slices per person. But the story of how the humble pizza came to enjoy such global dominance reveals much about the history of migration, economics, and technological change.

Pizza history is very interesting. The actual word “pizza” was first documented in 997 AD in Gaeta, Italy, and successively in different parts of Central and South Italy.  While pizza has been eaten in Italy for centuries, it was not until after World War II and when pizza became popular in America, that it became really popular in Italy.

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