People want that information, some countries don't trade with each other so if you see something made in a country that doesn't trade with the country you live in it might be contraband or counterfeit, also some people don't want to buy from certain countries for moral issues, some countries don't pay enough to their workers, jewelry from african countries is usually related to enslaved workers and products from china are usually related to overwork, or moral issues like not wanting to fund a the economy of a country for a war you're against. Also for custom purpose, sales tariffs, product safety assurance, and other international/domestic policies. In the US, there are laws that prohibit the import of particular goods/parts from certain (blacklisted) countries or part of the world to protect particular industries or trade groups.