I have seen a company that said that all other providers have much higher prices. I believe that it was much more effective.
My main reasoning for that is because many people seek lower prices.
The main point of the nuclear non-proliferation treaty was not spread the use of nuclear weapons so your best choice would be nuclear energy as a source of fuel was not to be allowed.
The correct choices in the questions above is the third choice, where it meets a social need and improve the economy. It is because when they spend money in education, it reaches and meets the social need of the persons who are not capable of studying because of their lacking and it also improves economy because when students graduate, they could enter jobs where they could help rise and improve the economy in the country.
You can’t explain it scientifically.
Countries trade with each other when, on their own, they do not have the resources, or capacity to satisfy their own needs and wants. By developing and exploiting their domestic scarce resources, countries can produce a surplus, and trade this for the resources they need. You can integrate all of this into your question. Hope this helped.