Babylonia was a very rich country, for the two rivers brought down and dropped great quantities of earth just as the Nile did in Egypt, and this made very rich soil. Wheat, from which we make bread, is called the staff of life. It is the most valuable of all foods which grow. It is supposed that wheat first grew in Babylonia. Dates in that part of the world are almost as important a food as wheat. Dates, too, grow there very plentifully. Now, you may think dates are something to be eaten almost like candy but in Babylonia dates took the place of oatmeal. In the rivers there were quantities of good fish, and as fishing was just fun, you see that the people who lived in Babylonia--the Babylonians, as they were called--had plenty of good food without having to do much work for it. No one had any money in those days; people had cows and sheep and goats, and a man was rich who had much of these “goods.” But if a man wanted to buy or sell, he had to buy or sell by trading something he had for something he wanted. Somewhere in Babylonia the people built a great tower called the _Tower of Babel_, which you have probably heard about. It was more like a mountain than a tower. They built other towers, too. Some say the Tower of Babel and towers like it were built so that the people might have a high place to which they could climb in case of another flood. But others give a different reason. They say that the people who built these towers came to Babylonia from farther north where there were mountains. In this northern land they had always placed their altars on the top of a mountain, to be close to heaven. So when they moved to a flat country like Mesopotamia and Babylonia, where there were no mountains, they _built_ mountains in order to have a high place for the altar on top. To reach the top of these mountains or towers, they made, instead of a staircase on the inside, a slanting roadway that wound around the outside in somewhat the way a road winds around a mountain. There was hardly any stone either in or near Babylonia as there was in Egypt, and so the Babylonians built their buildings of bricks, which were made of mud formed into blocks and dried in the sun. In the course of time, bricks of this sort crumble and turn back into dust again just as mud pies that you might make would do. This is the reason why all that is left of the Tower of Babel and the other buildings that were put up so long ago are now simply hills of clay into which the brick has turned.