Answer:
Social classes and urbanization would be the answer to this question.
Answer:
A regional problem exists when there are marked disparities in the standard of living enjoyed by people in different regions of a country. In the United Kingdom the most commonly identified manifestation of the regional problem is the level of unemployment in an area.
The type of government is in the United States is the Federal Government.
Proximity is the factor that determine where the illegal immigrants settle. The country like United States, has so many illegal immigrants that hope to have a better life in the country, they risk their life just to have money in the country because they know that country is rich so they migrate in the United states.