Effective January 1, 2001, the annual salary of the President of the United States was increased to $400,000 per year, including a $50,000 expense allowance.he president's salary is set by Congress, and under Article II, Section 1 of the United States Constitution, may not be increased or reduced during his or her current term of office.
As such, stratification is the relative social position of persons within a social group, category, geographic region, or social unit.
The Core Issue of Economic Geography. In the context of economic geography, agglomeration may refer to a concentration in space of some entity, or the process by which such a spatial formation is created.