use of stones as weapons, tools, use of fire, use of metals, invention of the wheel, creation of metal weapons
learning to capture and tame animals; planting crops, gathering seeds from wild plants, making tools (ploughs) for breaking up the ground
writing (turning drawings into letters), counting (cattle and sheep), earliest forms of arithmetic, writing to record the language
the invention of printing, spread of books among a lot of people, writing of many books, discoveries of new lands, animals and plants
the inventions of the Industrial Revolution – steam engine, condenser, piston; manufactures, machinery.
machinery, manufacture of cars, appearance of lorries, buses, airplanes
atomic energy nuclear weapons, inventions of television, computers, spacecraft, genetic engineering
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