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'''Economic classes''' are generally divided into the [[rich]] upper class or [[aristocracy]], the [[middle class]], and the [[poor]] lower class. People in the upper class are so [[wealth]]y that they don't have to work. The middle class work for a living midway in comfort between wealth and poverty. They can be either [[white collar]] or [[blue collar]] workers. The lower class are so poor that they often beg for [[alms]] as in the [[untouchable]] [[caste]] in [[India]].

'''Economic classes''' are generally divided into the [[rich]] upper class or [[aristocracy]], the [[middle class]], and the [[poor]] lower class. People in the upper class are so [[wealth]]y that they don't have to work. The middle class work for a living midway in comfort between wealth and poverty. They can be either [[white collar]] or [[blue collar]] workers. The lower class are so poor that they often beg for alms as in the [[untouchables]] [[caste]] in [[India]].

The conditions of the three classes has varied by time and place. In free societies, [[upward mobility]] makes it possible for poor people to become middle class, and this is rather common. Less frequently, middle class people become rich.

The conditions of the three classes has varied by time and place. In free societies, [[upward mobility]] makes it possible for poor people to become middle class, and this is rather common. Less frequently, middle class people become rich.