Raffaele Esposito invented pizza Margherita. When King Umberto I of Savoy and his wife, Queen Margherita of Savoy, were on official visit in Naples, they went to eat in Raffaele Esposito's place. So he put in his pizza tomato, mozzarella and basil because these three ingredients have the same colours as the Italian flag. He also put the slices of mozzarella in order to create a daisy -in Italian, the word "margherita" means "daisy". Queen Margherita appreciated it so much that the pizza was named after her. Nowadays, pizza Margherita is the most loved worldwide.
https://en.wiktionary.org/wiki/Raffaele [noted -ed]