=Why Increase Production?= Having secured the material suitable to be made into cloth the next step was to improve the process of manufacture. The first wool that was woven was rolled in the hand, made into threads, and woven in a very crude loom. The task was a tedious one, and the cloth was produced very slowly. But, as time went on, man by practise learned more about weaving. He had been weaving linen from flax in the days when the Pyramids were being built in Egpyt, but it was not until the power-loom was invented that cloth-making could be carried on as a profitable industry. Early man had just about all he could do to provide himself with food, shelter, and the clothes that he needed. To-day these things are provided in quantities sufficient for all and with little exertion. Hence, we find the basis for the division of labor. A machine for spinning cotton can produce enough thread in a very few hours to make clothes for the families of all the men who are interested in operating the machine. This thread is then turned over to the operator of the power-loom; the machinery is started and the cloth begins to roll itself up into a huge bundle. Very soon enough is produced to clothe all of those who are interested and occupied with this operation. The cloth is then turned over to the garment-makers and the process of fashioning the clothes is carried forward so that each individual has his or her part to perform; and in a very short time there are enough garments fashioned and finished so that all the garment-makers can be provided with clothes. Now comes the question that is so often asked. If there is plenty of clothing for everybody, why should some people not have clothes enough? If a man interested in the production of cloth makes more than enough for him to wear, why should he go on working? The answer to this is that, in the modern world, man must trade off his specialized product in order to satisfy his own needs and those of his family.