The term city designates that urban area that has a high population density and in which services and industries predominate, certainly opposing the agricultural activities that are carried out pre-eminently in rural regions..
Although there are considerable differences in the size and population density of some cities with respect to others, for example, the immense San Pablo, Buenos Aires and Mexico City and a less populous city of Montevideo, these tend to be the most densely populated areas of the world. whole world.
In addition, most large cities are political-administrative entities that have a special political importance, precisely because the central governments of the countries are generally erected and reside in them, that is, they are the places par excellence where the most important decisions that concern the life of a country.
However, to avoid suspicions or so that some regions are not misnamed cities, for example, the European Statistical Conference in Prague considers that a city will be defined as such if it has an agglomeration of people greater than 5,000 inhabitants and if the population engaged in agricultural tasks do not exceed 25% of the total. Already, from the 20,000 inhabitants, of course, there will be no doubt that we are facing a full-fledged city.
In addition, a city is characterized by the appearance it shows, for example, very different from that of the countryside or a rural area, since in the cities collective buildings predominate, of considerable height and as we mentioned earlier, commerce, industry and commerce turn out to be the main activities that take place in these.
Likewise, another aspect that most cities in the world share is the division of their extensive territory into different areas according to the specialties and needs of the inhabitants, such as being a district strictly destined to carry out and where most of the financial activities take place. of the city, that is, where most of the largest companies, both national and international, financial institutions, among others, are available. Likewise, in some cities we can find areas specially designed for a specific activity such as the sale of clothing, in Mexico this is typical, for example, of the one known as Zona Rosa or the sale of antiques, in the world-renowned neighborhood of San Telmo. in Argentina.
The city is one of the oldest human organizations, approximately, the first cities that appeared in Mesopotamia, along the Nile River, date from five thousand and seven thousand years ago and they showed, with the exceptions of the case, because we are not going to pretend the population density and the specialization that exists in the cities of our days, several similarities with the great cities of today such as permanent settlements whose inhabitants were mainly engaged in activities such as commerce and the provision of food.
