Since they have just gotten over war and money was good for one side but they had lack of money on the other side. From that case it was hard for them to agree over each other whether they could trade or not.
Answer:
They cut off communication with the rest of the world, and isolate. The citizens are not exposed to other peoples, and are mostly fed information by the government. If they don't think anything is wrong, then nothing will change.
Explanation:
Yup this is true because if the supreme court agrees on it they can veto.
Mountains made it hard to find flat land.
