At the moment, Berengar was standing in Ludwig's workshop looking at what is arguably the most important invention that he had introduced thus far. Sitting in front of Berengar was a piece of technology that was critical to the industrial age.
This essential feat of engineering was the steam engine. The steam engine was a machine that operated using water and coal to produce steam; the steam created was then used to push a piston back and forth. This pushing force could then be used for work by attaching a connecting rod and flywheel.
With this piece of engineering, trains could be built, oil could be pumped, workshops could be powered, canals could be easily dredged, fields could be plowed without beasts of burden, etc. The limitations for such technology were far fewer than what he currently used to power his Kingdom's industry.
