of the upper class and those who gain great wealth through commercial activity are looked down upon by the aristocracy as nouveau riche. In the United Kingdom, for example, the upper classes are the aristocracy and royalty, with wealth playing a less important role in class status. Many aristocratic peerages or titles have seats attached to them, with the holder of the title (e.g. Earl of Bristol) and his family being the custodians of the house, but not the owners. Many of these require high expenditures, so wealth is typically needed. Many aristocratic peerages and their homes are parts of estates, owned and run by the title holder with moneys generated by the land, rents or other sources of wealth. However, in the United States where there is no aristocracy or royalty, the upper class status exclusive of Americans of ancestral wealth or patricians of European ancestry is referred to in the media as the extremely wealthy, the so-called "super-rich", though there is some tendency even in the United States for those with old family wealth to look down on those who have accrued their money through business, the struggle between new money and old money. The upper class is generally contained within the richest one or two percent of the population. Members of the upper class are often born into it and are distinguished by immense wealth which is passed from generation to generation in the form of estates. Based on some new social and political theories upper class consists of the most wealthy decile group in society which holds nearly 87% of the whole society's wealth. Middle class See also: Middle-class squeeze The middle class is the most contested of the three categories, the broad group of people in contemporary society who fall socio-economically between the lower and upper classes. One example of the contest of this term is that in the United States "middle class" is applied very broadly and includes people who would elsewhere be considered working class. Middle-class workers are sometimes called "white-collar workers". Theorists such as Ralf Dahrendorf have noted the tendency toward an enlarged middle class in modern Western societies, particularly in relation to the necessity of an educated work force in technological economies. Perspectives concerning globalization and neocolonialism, such as dependency theory, suggest this is due to the shift of low-level labour to developing nations and the Third World. Middle class is