Worldwide, more than 5 billion pizzas are sold each year. More than 3 billion pizzas are sold annually in the USA—4 billion if you include frozen pizzas. In the United States, pizzerias account for 17% of all restaurants. The first pizzeria, Antica Pizzeria, opened in Naples, Italy, in 1738. The first U.S. pizzeria, Gennaro Lombardi,...
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