 The introduction of the baking of processed cereals including the creation of flour, provided a more reliable source of food.Egyptian sailors carried a flat brittle bread loaf of millet bread called "dhourra" cake, while the Romans had a biscuit called "buccellum".During the Egyptian Neolithic period or New Stone Age period, the use of stone tools shaped by polishing or grinding, the domestication of plants and animals, the establishment of permanent villages, and the practice of crafts such as pottery and weaving became common.