I world say the answer is between 400 and 200 BCE
The most prominent center of the residenly
Frontier became a part of America's identity. It represented many things to Americans. Adventure, danger, freedom and opportunity represents the frontier. It is because of the end of the frontier, it had a psychological impact to Americans because the frontier became their sort of escape mechanism.
"a. A command economy with a low Human Development Index" describes a developing nation, since the government is almost always in control of production.
