rivadavia and the 1826 constitution found strong resistance from both unitarians and federals. unitarians did not support the law that turned buenos aires into the capital city of argentina and nationalized its port, as the buenos aires province would lose the exclusive benefit from it. federals did not accept that the president would have the power to appoint provincial governors. his authority was further weakened by the outcome of the war: despite of the military victories, rivadavia wanted the army to return and protect him from an attack from the other provinces, so he ordered to rush a treaty ending the war. this treaty did not formalize the region as an argentine province, but as the independent country of uruguay. highly rejected, rivadavia resigned and left to europe. the 1826 constitution was repealed, and the political organization returned to its previous state.