Poverty in the world

In the developed world live about 20% of the global population. However, not all who live in it have an acceptable standard of living. As in the poorest countries, a few concentrated most of the wealth. The growth of global wealth in developed countries is accompanied, paradoxically, an increase of contrasts and, above all, an increase of poor population. For example, in the United States, the 400 largest fortunes in the country a concentrated amount of resources equivalent to saving all the rest of U.S. citizens, while twenty million people go hungry fruitless days a month, according to a study by the University of Harvard. The expansion of this phenomenon, a partner in many of the cases to the problems of marginality in urban areas, has led to coin a new term: the 'Fourth World' to refer to the group of disadvantaged population in more developed areas. That is, the 'Fourth World' is made up of poor people in rich countries.