the banda oriental, which was renamed by brazil as cisplatina, was liberated by the 33 orientals, and joined back the united provinces. brazil did not recognize it, leading to the cisplatine war. it was thought then in buenos aires that to wage the war the country should have a proper head of state, so a new congress began to write a constitution for this, which would be enacted in 1826. however, because of the urgency, bernardino rivadavia was not appointed president after the promulgation of said constitution, but though a special law creating the office of president.