State law has not always existed in its current form, state concept has evolved over time, in this aspect, various theories have developed, doctrines which they founded and strengthened him as the most viable form of political organization of human society. By analysis of the doctrine it is necessary to define the state legally, politically and socio-economic. Legal concept explains many relationships and situations established between active subject and passive state, a subject of rights and obligations and other social groups, or between the State and individuals, looking at the content of legal rules of the State. Moreover, we can say about the political concept, that it originates in the formulations of thinkers on the origin and formation of the State, its evolution and its current meaning, according to political realities, while the socio-economic terms is a system of subordination organization, aiming to achieve a balance between legitimate personal interests of individuals and those of the communities, but first of all the interests of the nation and then the assembled humanity. There is a diversity of views on the state, which addresses two trends - an abstract one and another realistic, so we can say that it defines a unit of institutions, a human community situated on a territory and subject to an authority.