In the late 1800s, many Italians move to the United States. They brought pizza with them. The first American pizzeria was Lombardi’s in New York City. Its open its doors in 1905. Now pizza is one of the top three most popular U.S. foods. Of course, Americans are hardly the only pizza lovers. Humans ate 5 billion pizzas a year. Our choices for toppings vary widely. Brazilians love green peas on their pizza. Russians like fish and onions. People in India use lamb and tofu. The Japanese think eel and squid are yummy. Some pizzas truly sound strange. Yet all share two things. Each begins with bread. And each is a slice of history.