If a country is isolated, it will have to produce everything that it needs: especially food clothes and medicine. It won't be able to specialize, but it will have to focus on satisfying the needs of the people.
If it is not isolated, it can specialize in the things that it can produce the best and fastest, and hope to exchange it for the things that it can't produce.
They should bring everything the person asked for and be on time.
The two factors, Temperature and Pressure, have the greatest influence on the state of each of Earth's layers.
Hope I helped!
The correct answer should be Troy