Is it true British but expecially Americans have invented and created the actually ice-cream?

Ice cream originated in Italy. that country still makes the best and most varieties in the world. As for the other food items mentioned above or in other answers to this question, pasta as we know it is Italian but influenced by a Chinese dish (noodle) brought back by Marco Polo. Pizza is also Italian, came from Naples, but originally meant the type of bread from which the bases are made. Hamburgers came from Germany (from the town of Hamburg -hence the name).