Pedzisa mutsara unotevera: Zvisinei, kusimuka kwaFederalist Juan Manuel de Rosas saGavhuna weBuenos Aires muna 1829 kwakaita kuti bhangi racho risawirirane nezvinangwa zvomunhu ane simba, uye rakapiwazve chitupa chebasa rokuita mari mupurovhinzi muna 1836. Basa rayo raimbova rinokosha mune zvemari yenyika rakaderedzwa kuva bazi rebhangi revatengesi panzvimbo yacho. Kutevera Rosas'
1852, sangano rakadzorerwa zviri pamutemo sebhangi rakazvimiririra rakasanganiswa muna 1854 uye muna 1863, rakatumidzwa zviri pamutemo kuti "Bhangi reProvince yeBuenos Aires", uku richichengetedza basa rayo rekuwedzera senzvimbo yenyika uye yedunhu.