But then as we enter into the second half of the 18th century, and especially the 19th century, something important happens in the scope of human history, and that's the Industrial Revolution, or maybe you could say the Industrial Revolutions. Now, there's many technologies that are central to the Industrial Revolution, but probably most important is the steam engine, although you could contend maybe it's the steam engine, maybe it's electrification, maybe it is the telegraph. But the steam engine all of a sudden allows us to harness the power of really coal to create steam to turn engines, and then these engines could be used to power factories so that you could amplify what human labor could do before. This factory right over here, it looks like they're creating fabric from some kind of thread, or they might be sewing of some kind. And a human equipped with a power loom or with a sewing machine could produce much, much more than they could have ever produced before by hand. So the steam engine and things like electricity also create a revolution in transportation, the transportation of goods and people, but also the movement of information. This right over here is a picture of a steamship which you could use for trade, but you could also use it to project military power.