But there's the rest of the world, and especially the rest of the world that is not at the same level of technological sophistication yet. So you can perhaps use your military in order to force them to trade with you. Similarly, what do you do with all of those finished goods? You have limited markets on your islands, but what if you could sell to the hundreds of millions of people who aren't directly in your country? This desire for more raw materials and cheaper raw materials, and this desire to sell your goods, the outputs of industrialization, this, to a significant degree, drove this imperialism, this colonization, and in general, a motivation for freer trade in general. When the free trade didn't happen freely, sometimes it was forced on the country that was being traded with. And as alluded to already, the technology which helped fuel this Industrial Revolution also made it easier to control a far-flung empire.