the national organization saw disputed about the type of relation that buenos aires should maintain with the other provinces, either as a centralised government or as a federation. the supporters of each project would wage the argentine civil wars as the unitarians and federals. some provinces of the former viceroyalty (turned first into the united provinces of the río de la plata and then into the argentine confederation) tried to secede, some of them remained as independent countries up to modern day (as bolivia or paraguay) and others would rejoin argentina (as the republic of entre ríos). two unitarian constitutions were promulgated and then rejected; the definitive one would be the federal argentine constitution of 1853, which is still in force.