you need it to drive water wheels, pumps, millstones or saws. It took the invention of the steam engine to guarantee supplies of drive energy at any location ... common-or-garden water - specifically in the form of steam, which was used to drive the pistons of engines, pumps and locomotives. But lurking behind the new ... the beginning, as we all know, there was fire. Our ancestors used it to drive off wild animals, convert raw clay into pots, turn indigestible roots into