What is the Meaning & Definition of nationality

Nationality is a concept of extended usage in our language and that it is linked with the condition of particular geographical origin who holds an individual, i.e., when speaking of nationality will be speaking of country, State, or nation in which a person was born and in which it has been registered legally as a citizen there. For example, Maria was born in Mexico and his parents subsequently performed corresponding procedures to write down it as citizen of that country, then Mary will have Mexican nationality. For instance, be called original nationality which is acquired at birth, meanwhile, each legal system includes two issues to set: the ius sanguinis or blood law, which follows the criteria that a person inherits the nationality of his father or his mother; and jus soli or right of soil, which considered that corresponds to the person the nationality of the territory in which it was born.
It is important to note that people can get through various formalities the nationalities of other countries that were not born, insofar as possible, you can do this because they have a direct ancestor that enables them to manage the nationality of another country.
Thus, if Mario is Argentine but his paternal grandfather is Spanish, Mario, you can manage before the competent bodies Spanish nationality because the law guarantees it in this sense. It should be noted that some Nations allow that the children and grandchildren of its citizens also inherit the citizenship.
On the other hand, an individual who was not born in a particular country can obtain citizenship if he marries someone who is native from there. Laura is Peruvian, moved to Italy and married an Italian, then, after a while you can manage your Italian citizenship. The latter case, no doubt, has proliferated in recent decades as a result of labour migration product of globalization, i.e., many who left their countries of origin in search of new horizons and opportunities, in addition to settle and work in another country formed a family.
It is worth mentioning that those who derive citizenship through the channels listed above are recognized as one ordinary citizen and have full rights and duties as such.
On the other hand, the concept of nationality is used to refer to that region which has certain peculiarities which attribute an autonomous and singular personality within the nation in which it is located.