Power is measured in millions of tons of steel, coal or oil Birth of a diversity of materials.
One can almost create custom-made polymers, able to meet a predetermined specification. Alloys, ceramics, composites, glass increase the potential adaptability of matter even more. Agriculture takes off from the level where the crop is just sufficient to resow, once population and animals have been fed. Deforestation caused by land clearings. The industrialization of agriculture, of animal husbandry, of fishing increases productivity and depopulates the countryside.