And if you have more land, which is for the most part used for agriculture, well, you're going to have more taxes and wealth, so taxes. And if you have more people, they will have output, so you can tax that, but they can also be used, they could be taxed, so to speak, for war. They could produce more soldiers. And so the more revenue and soldiers you have, well, that could help you just accrue more and more power. And so this is the classic loop that you see why most empires tried to expand, and sometimes when they stopped expanding, you see that they started to decline. But now in this video, from the early 18th century to the beginning of the 20th century, we have new things at play. We have the technological innovation from the Industrial Revolution, things like electricity and steam power.