One of the most important ingredients for Pizza is the sauce. Without the
Tomato, pizza would have tasted much differently.
Tomatoes (which are actually a fruit) was first believed to be domesticated
around Mexico and Central America by the ancient indegenous population.
The Aztecs and Incas are the first credited for raising it as a food crop in 700
AD.
In the 16th century European Explorers were so appreciative of this fine fruit that they decided to introduce it to the rest of Europe. Interesting enough while the Italians, French, and Spanish began to actively use it as ingredients for recipes, the English saw it as a novelty yet poisenous food.
This myth continued into the American coloniel period and up to the middle of the 1800's when it began to gain acceptance.
Because of the tomato's popularity among the Italians in the past few centuries it was used as a topping by Raffaele Esposito, an Italian baker who is credited with being the first to create the modern pizza.