Through the years, many of the country's municipalities have been enlarged in scale space. Accordingly, the population as well as population density in the inner city area on a rise high. The thing of interest is that this process does not occur evenly which is mainly concentrated in the municipality such as Hanoi and Ho Chi Minh City. Here, in addition to the positive aspects is the increase the dynamism of social workers and promote the process of rapid urbanization, migration from the countryside and town have been pressured not to small for the system of infrastructure, social services, housing ... One of the inadequacies that everyday people are the large municipalities are "living" is the traffic accident, pollution of the environment. In addition, the State increased the population mechanics too quickly in major metropolitan also makes residential management meet no less difficult.
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