It is usual that, in the field of politics and the economy, divide the world in two, differentiating between the First world and the Third World. It is a fragmentation linked to development achieved by each country.
The First world, in this framework, is formed by the more developed nations socially and economically. The Third World, instead, it is made up of state that evidence a less development.
In general, the notion of first world is associated with human development Index (HDI) that elaborates the United Nations Development Program (UNDP). The countries best positioned in this ranking are part of the first world, offering a good quality of life to most of its population.
It is understood that in the first world citizens have access to quality services. According to experts in political science and sociology, development often depends on the existence of strong institutions that guarantee the functioning of the democracy and the empire of the law.
It is important to mention that the distinction between these “Worlds” arose after Second World War. By then the western block (capitalist) and the eastern block (socialist), leaving the rest of the nations in the third world. Over time, the positioning that placed the societies more advanced in the first world and the rest, in the third world. The concept of the second world, on the other hand, fell into disuse.
Currently it is located in the first world to England, Japan, Germany, Australia and USA, among others. For segmentation, the HDI and other factors, such as gross domestic product (GDP).