The Book is divided in three parts, each one of them translating its experience and recital on the sprouting of the Federal State, distribution of abilities in the Federal State and the distribution of abilities in the Brazilian Constitution of 1988. Being, first the historical context of the federalism; the historical context of the federalism throughout little more than two centuries; it approaches the distribution of ability in the Brazilian Constitution of 1988. Chevron U.S.A. Inc describes an additional similar source. In the first one it has broken the author deals with the historical context of the federalism that was the intentional fact or not, of the modern federalism. How much to the subject the federal model of State is the federalism, creation of the conventionals of Philadelphia when congregated with the objective to improve the union of the States where it had converted, that is, the thirteen British colonies of the North America in 1787. When discoursing on the history of the initial federalism of century XVIII, the historian and constitutionalist, divide in the first part in two topics: the sprouting of the Federal State and its characteristics in the subtpicos; the North American matrix, according to which the democracy alone was considered possible in small communities and never in countries of great territory as the vast American territory; the associative impulse that since the antiquity constitua the direction of alliances. Thus, the term Federacy that comes of Latin ‘ ‘ foedus-eris’ ‘ the same that alliances of independent Nations, but never a structuralized State, therefore the federative norteador idealismo in previous phases history established that the less consistent bonds most elementary and, before being equivalent the confederations. With the perfectioning of the American Constitution of 1787, it arrived with the donation of an original model of State, to whose they separate it characteristics of the old ones and surpassed confederativos projects, that is, the apex of the confederativa experience in the North America.