The Romans invented a mass similar to that of a circular bread with herbs and seeds. The women cut the dough and gave it a round shape, then stuffed into the ovens common. At its inception, the cheese was not part of the preparation (using only tomato, basil and herbs). In United States was introduced in 1905, but became popular after the war, the spread that the soldiers gave him returning from Europe. France has its own "pisaladière" Roman-style rectangular. Spain, specializes in pizzas of different and sometimes unusual fillings. In the Middle East is "pitta bread" In China the dough is cooked by steaming, and served as small pizzetas with different flavors.