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.
A mixed economy is an economic system that has some combination of traditional, command, and market economies; or is a modified free enterprise economy. Mixed economies exist because the world is NOT neat and orderly. Often mixed economies form when one type of economy comes into contact with other cultures and they borrow ideas. Major events such as revolutions and economic depressions may cause economic systems to change, and sometimes a mixed economy is the result of an economy simply changing over time.