This community forged its present progress on the base of the sacrifice and the fight. Their ancestors speak of very hard moments, like the one to have had to attend the landslide of the old town, today buried under waters of the lake. That anxious and often tragic life, is very entertainment for the visitors, who in the Museum of the Establishments have the possibility of recreating crucial moments of federaense history. 1777 - Don Juan of San Martin (father of the liberator) founds the Mandisoví stay like a slug of the system of merchandise transport between the towns missionaries and Buenos Aires.
By earth way extended until San Antonio de Salto Small, today Concord, from where route continued with by water, so that the impassable jumps were drawn for that arose shortly before arriving at that section of the river, where soon would rise the Hydroelectric Complex of Great Jump. By those ways they journeyed travelling, post office (chasques) and troops of carts that lead grass, spun cotton and weave, tobacco and leathers. In order to remove to the productions the cheapest and fast system it was the fluvial transport, but the zone very was depopulated for that time and was necessary to attend the transport through the slugs. From the town hall of Yapeyú four rose: The Favor (today city of Mount Caseros in Currents), San Gregorio (in the corner of the rivers Uruguay and Mocoretá), Mandisoví (between small and great the Mandisoví streams) and Jesus of the Yeruá (near which today it is the city of Concord).
1810 - According to Belgraniano Decree of the 16 of the November of that year and to order of the mandisoveños, the property of the lands is adjudged to them that occupied, determine the limits of its jurisdiction and the ejido one is assigned to them: “that will be used for common grass and uses public”. The stay by then had been transformed into a progressive and outstanding lines up in which 26,000 heads of cattle were counted and resided outstanding retailers and landowners with a total of “650 souls of all age and sex”. According to the missing historian of the zone, Edgar Phoenitz 137 heads of household were counted for that year, between Spaniards, natural of the zone and guaraníes, reason why it affirms that Mandisoví was a mixed town ethnically.
Colonel Belgrano in his camping of Curuzú Cuatiá writes up the document asked for by Cálcena and Echeverria (distinguished landowner of the zone) in where in addition determines that to each new settler a lot would be assigned “paying $ to him 4. - for bottom of a School” and with this the mandisoveños obtained the tranquillity that soon the event would be in charge to alter to the point which they had to undertake the exodus. 1847 - The 20 of March of 1847 the acting commander of the town and department of Mandisoví, Colonel Manuel Antonio Urdinarrain, Head of the Division of Vanguard and the Border, resident in Concord and under the command of the Right governor Jose de Urquiza said to his superior following one “… before I yesterday returned after to have left delineated and amojonado the new Town of Mandisoví, without to have been possible to found it on the stream of the Vizcocho, nor on the one of the Virgin, because first he is today completely dry and the second presents/displays the difficulty to have than more average legua of bathed, I have founded it on the ravine ofthe Uruguay river, in a colorful place, with the dista of seat two and average port that blocks, and of forward edge from houses to Uruguay, little more than average block”.
“One is going away to give principle to the formation of the plane and concluded I will have the taste to pass it to it for its knowledge, but one needs to know the name whereupon the new population is going to be designated to put it in him, and I have left it to the election of You so that you use to do it…. I have issued order already so that all the families from the old one to the new town are transferred”. This text allows to establish the date in which ready one for the transfer remained all of which soon it would be “Town of the Federation” according to suggested Urquiza governor, after having authorized its relocalización towards the borders of Uruguay. The fratricidas wars had surrounded the town of Mandisoví, several times won, sacked and left by their inhabitants. It changes of place and name. In that second establishment, like in first when it was transformed into a commerce place, it would have his time of splendor and bonanza with the lumber production, until the dagger of Great Jump sentenced its destiny. 1979 - The 25 of March of that year with the presence of the President “De facto”, Tte. General Jorge Rafael Videla, is inaugurated the New City of Federation.
Flaming and modern, the third establishment received its inhabitants who had to suffer one first stage of esolation since the buildings public had not been constructed, the streets and paths were not finished, did not exist the vegetation, either the illumination and the landscape was a handful of houses turned a “obrador literally”. Years before there was one long list of contingencies and uncertainties because although the work of the dam of Great Jump was in march, the construction of the city had not been decided. The antecedents go back to year 1946, when President Perón signs the binational deal with the Eastern Republic of Uruguay for the advantage of the expresses of the Uruguay River in the zone of Great Jump. The objective one was the energy production and was determined that Federation would give its life after the progress, mainly when in 1974 begins the construction of the Hydroelectric Complex. Just for 1977 and after many doubts, the construction of the new city begins. In two years the federaenses had attended the demolition of their homing.
