Foreseen this exchange, for the treated one to Ayacucho of 1867. The parliamentary opposition in Brazil to any territorial cession in the Acre was suspicious Rui Barbosa, preferring to offer to greater pecuniary compensation. This solution, however, attemped for Rio Branco, was not accepted for the Bolivians; Rui was said farewell then to the commission. With respect to the performance of Rio Branco in the question of the Acre, it is important to designate that it starts effectively from the moment that it is known that the woollen government Peace was organizing a military expedition to reduce the natives of Acre, for this time, already had fond of Germany the Baron of the Rio Branco to occupy the Itamarati. In a three note of February, of 1902, it informed, who did not desire that Brazil breached its relations with Bolivia, but that ' ' he made to advance forces for sul' ' , to police until the River Iaco the contested territory, being removed of Acre Port bolivian customs. But the origin of the disputes for the territory of the Acre, can be found in the Treated one to Madrid of 1750, and it will not appear of a discontinuity of the Brazilian ownership; but yes, of an error of interpretation given to the Treated one to 1867 (Ayacucho) and some errors of landmark.
It will also appear, of the attritions the one that such errors had given cause, and that they will be corrected in 1903. (CASSIANO RICARDO – the Treated one to Petrpolis, I, p.62). According to Cassiano Ricardo, the proper Spanish signatory of the Treated one to Madrid, D. Joseph de Carvajal y Lancaster it had declared that the objective of the treated related one was to recognize the Portuguese Crown ' ' vertientes wools that to drain en el wool river Amazonas' '. However I begin, it basic established for Alexander de Gusmo, negotiator of the Treated one to Madrid on the part of Brazil Colony, was of the Uti Possidets (utility of the ownership), that it more started to be the norm observed by our diplomacy emtodos our treated ones to limits.