Where Did Pizza Originate?
Pizza is thought to have evolved from early Egyptian flat bread. In ancient Pompeii, Italy, coarse bread dough was brushed with olive oil and baked.
Naples, Italy, is considered the birthplace of the modern pizza, although its date of origin is unknown. Pizza was brought to the United States by Italian immigrants and made popular by soldiers returning from Italy after World War II (1939-45).
Sources: Garrison, Webb. How It Started, pp. 40-41; Herbst, Sharon T. The New Food Lover's Companion: Comprehensive Definitions of Over 4000 Food, Wine, and Culinary Terms, p. 354.