Popular sovereignty is where the government is created and run by the will of the people.
So your answer would be people.
-Britain started it first both physically and politically.
-Large populations of potential workers
-water power and coal to power machines
-iron to make tools, machines, and factories
-river transport
-harbors to ship and sell products
Filial, because you need loyalty to be trusted, you need God to guide you and you can make the choice to be independent but, independent or not does nto matter.
Hope this helps!
My option is that the closer they are to their sources of energy the more they produce and more materials to complete their product.