If we read the dictionary of the Royal Spanish Academy (RAE) , we will find that developing It is linked to the action of developing or the consequences of this action. It is necessary, therefore, to trace the meaning of the verb to develop: it is about increase, enlarge, extend, expand or increase some characteristic of something physical (concrete) or intellectual (abstract).

For example: "The economic development of this country is surprising: in just three decades it positioned itself as an industrial power", "I like your idea, but I think it needs a little more development", "The filming had a rugged development, as several actors suffered injuries when recording the action scenes".
The development also refers to the definition and elucidation of a theory ; to to exhibit or to converse broadly certain themes or issues; to perform calculation tasks indicated in an expression with analytical characteristics; to find the terms that form a series or a function ; or simply to happen , ensue or occur .
When the concept of development is applied to a community of human beings , refers to progress in the sense Social , economic , politician or cultural .
He United Nations Development Program whose acronym is UNDP , is the body that is dedicated to elaborate the measurement known as Human Development Index (HDI) . This statistic that serves as an indicator of the state of a society takes into account factors such as the expectation of healthy life from the moment of birth, the level of literacy of the adult population and enrollment in schools and the economic wealth that is reflected in the Gross Domestic Product (GDP).
Some types of development
He economic development It is understood as a process where the conditions of goods and services are in a growing state and within reach of all the social groups that make up the community. A society where there is good economic development has characteristics of economic and social integration and would have less people living in marginality In order to achieve economic development, countries are guided by the principles established by the UN, where macroeconomic measures are reaffirmed as long as they are developed towards a better production that improves the living conditions of societies. Within these measures, special attention is given to human development, which not only encompasses financial needs but also the intellectual and cultural . Therefore, a developing country should offer better training to its citizens and a guide so that the skills acquired from such training can be brought to work experience, exercising an efficient activity in economic, social, cultural and political. The concepts that are closely related to economic development are: increased real income per capita and increase in productivity real per capita in all economic branches that are affected.
He sustainable development it is the one that allows an improvement of the conditions of present life without putting at risk the resources of future generations. That is, an adequate use of the resources that are available, satisfying the needs of the inhabitants but without squeezing out the natural assets to the maximum.
In order for sustainable development to exist, three fundamental elements are needed: a society, an environment and an economy . The three areas must coexist harmoniously and the overvaluation of one of them could be a cause of disaster; for example if we consider that money is the most important thing in life and to achieve it we are able to use up to the last natural resource , a mismatch is going to be generated that we will lose as a society. Sustainable development affirms that nature is a means but that it is necessary to respect certain limits in order not to make mistakes that could cost the lives of future generations. The fundamental thing in sustainable development is the absolute harmony between humanity and nature.
He metropolitan development It is the resounding growth of cities, becoming centers of mass concentration. This type of development is very positive because while it is booming it brings many advantages such as an increase in job opportunities, improved communication between people and new options for leisure and entertainment. However, when this development is not carefully analyzed and the necessary forecasts are made, drastic consequences may arise that put the economic and social stability of the community at risk.
Receive the name of child development the process that each human being lives until reaching maturity. It includes a series of physical, psychological and cultural changes that are distributed in the different stages of life, from birth to the moment in which the individual leaves childhood. Within each society there are conditions that are considered typical of all the children of that society in the development stage.
In child development, both physical and psychological aspects are inseparable of the process, they are intimately related and can affect each other.
Finally it is necessary to clarify that to achieve any type of development it is necessary that there is a development plan , a series of steps that must be properly fulfilled so that comparisons can be established and know whether the objectives have been achieved or not. For example, to know if a child has developed properly it is necessary to take into account the different theories and analyze what differences exist between what is expected of a child of the student's age, and what it really is.