The correct answer is - industry.
The developing countries are most often occupied with making the economies heavily focused on the industry, so the countries engage into a big industrialization process.
The industries are usually based around manufacturing of the natural resources that the country has, and most often those are the metal ores, the agricultural products, creating materials...
The developing countries usually have a relatively big economic growth, and that is due to the bad economic basis that they had as a starting point.
One of the main reasons, I think, that they revolted was because the British had put a lot of taxes on the goods of the American colonists. One of the big things they taxed was tea. I think that if the British would have gone lighter on the taxes, especially the tea ones, the movement might have not happened.
Tea was a big thing at the time so obviously if they had to pay taxes for something they truly loved, it would make them upset.
I hope this helps, I’m not sure exactly when the question you’re asking is about but I tried :)
Spain and France, but specifically Spain that's why it's so common to go over there and see people with yhe same Jose
Supply and demand!
If you want a lot of something cause its in high demand.
