Of 1842 1846, roads had been the 1846 opened of outrossim, was since 1887, a mixing commission in charge recognizing the rivers of the territory, when in the year of 1889, Rodrigo considered confidentially to the council member Hisses a new negotiation that to the argued being took both the parts to submit it the survey of the President of the United States of America. thus, was signed treated relative to this arbitral award, in Buenos Aires the 7 of September of 1889. was ratified few days before the announcement of the Republic. We have there, the starting point for the definitive decision for survey, regarding the Territory of the Missions, in the South of Brazil. The mission in Washington of the Baron of the Rio Branco, on the question of the Missions as it was, in Brazil the Treated one to Montevidu of 1890, was ahead of this situation, forcible to appeal to the Treat one to 7 to September, related in the previous paragraph. We have that: relative to this survey, the Argentine Government very loyally agreed to this another solution. To the Baron of Aguiar de Andrada, that already had argued in 1876-77, the question in special mission the Buenos Aires, was delivers it prohibited it of the rights of Brazil. In March of 1893, however, falecia in Washington this distinct diplomat. Today still he argues yourself very regarding the responsible one for the indication of the name of the Baron of the Rio Branco to Floriano Marshal to be nominated our representative in Washington in the question of the Missions; it was Serzeredo Leather strap, Sousa Dantas, Nabuco or Souza Leather strap? The fact is that, with the death of Aguiar de Andrada, six days after the occurrence, accepted Rio Branco, the nomination for the defense of the rights of Brazil, in Washington, relative the question of the Missions.