Constitutional data is today, that the statutory authority recae in the Government of the Nation. This is not but the denouement of a longevous and complex historical evolution, whose common denominator in the time, common, likewise, in the distinct spaces, has been a fight fraticida between two estamentos social by the agglutination of the normative power. “De facto”, the conflict between the Assembly of remarkable and the King to exert the authority to dictate general norms, brings cause of the Low Half Age , but, the statutory authority of the planned Administration in the juridical legislations of our days finds his origin in the confrontation produced between two main institutions: the Parliament and the Crown, during the 16th century in England and won the 18th century in France.