In the period between the middle of the sixteenth and the last years of the seventeenth century, the loss of much of the documentation of the municipal historical archive does not allow us to establish whether there have been particular changes in the institutions. The crucial year for the documentation is 1799: in fact, a large number of municipal papers were destroyed in a fire in the public square. Guerrini writes in his " History of the land of Fratta, now Umbertide ":  " when in 1799 a gang of wicked brigands with blind vandalism and fury burned in the public square, as an infamous holocaust at the foot of the tree of Liberty, all the books and papers of the Town Hall ". TO  starting from the mid-eighteenth century there is a  fatigue towards the assumption of public responsibilities and a progressive worsening of some problems, such as the training of the bussolo (to choose the various institutional figures) and the choice of officers. From that moment on were introduced norms and  new institutional figures that would allow the proper functioning of the government of the Community of Fratta. Thus it was from the point of view of the management of public offices  it continued with a certain organizational difficulty, until in 1787  Pius VI, in April 1785, with an appointment of the then governor general of Umbria, Monsignor Angelo Altieri, found in the Perugian lawyer Silvestro Bruschi, the judge commissioner and general visitor of the communities of the territory of Perugia including the Community of Fratta . On January 28, 1787 the general council of Fratta was held and they emerged, according to what they report  Sargentini Cristiana e  Santolamazza Rossella who edited the item Fratta / Umbertide on the SIUSA site, " conspicuous administrative irregularities to be ascribed to the admixture in the exercise of the functions assumed by the administrators, to which was added a heavy debt of Fratta towards Perugia. Two were therefore proposed. assistants on public affairs, the canon Don Emanuele Cantabrana and the layman Paolo Mazzaforti, as practitioners of the interests of the community; moreover, having found that the number of councilors was not fixed, Bruschi ordered that the entanglement be carried out in his presence. decree established that the presence of at least twenty-four councilors was essential, << possessors, of good morals, and capable >>, the same number, that is, of the individuals who made up the magistracy's compass, up to the maximum number of thirty with the honorary members; and that, for the session to be valid, at least two thirds of the councilors were required . Particular attention was paid to the drafting and conservation of public writings, in such a way that << each of the four priors is given his key to the public case, where in addition to the documents and original receipts of interest, the community is kept closed the great seal. custodial and all the others, except that of the letters to remain with the secretary, according to the usual >>; moreover, that << it is the responsibility of the magistrate to do it, that all the books are kept exactly from the secretary, and that he is always at par in the register of deeds >> ". Silvestro Bruschi concluded the minutes of the visit to the Fratta Community with an approval dated  September 16, 1787.

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The era of the French and then Napoleonic Revolution was coming, even for a  an unimportant territory such as that of Fratta, changes arrived.  With the proclamation of the Roman Republic, on February 15, 1798, the innovative principles of French administrative policy entered the former papal territories by right. The constitutional charter, published on March 17, contemplates the classic tripartition between legislative power, entrusted to two chambers (Senate and Tribunate), judicial power, exercised by elected and irremovable judges, to the courts, executive power attributed to five consuls. Four ministries (justice and police, interior, finance, marine warfare and foreign affairs), the large police headquarters (national treasury) and large accounting (national computisteria) depend on this. The territory of the State is divided into eight departments: Metauro ( Ancona), the Musone (Macerata), the Tronto (Fermo), the Trasimeno (Perugia), the Clitunno (Spoleto), the Cimino (Viterbo), the Tiber (Rome), the Circeo (Anagni). In turn, the departments are divided into cantons, and within the latter, which constitute the smallest of the state circumscriptions, the ancient pontifical communities undergo an incisive process of homogenization, as only the centers with more than 10,000 inhabitants constitute their own municipality, governed by building blocks, while the others are grouped together until this minimum population threshold is reached.  Fratta thus became part of the  Trasimeno Department, based in Perugia,  as "Canton" with his own  consular prefect: Giuseppe Savelli.   The local company of the National Guard was also organized, with its own commander, the papal coat of arms was demolished and the municipality was given the name of municipality. But the Republic fell after 18 months with the surrender (29 September 1799) to the Neapolitan and Austrian armies.  Fratta thus returned again under the state of the Church.

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