Pedzisa mutsara unotevera: Buenos Aires Gavhuna Juan Manuel de Rosas akashandisa kuwedzera kwehutongi pamusoro penyika yose munguva yeHurumende yake 1835-1852 uye akaramba kupandukira kweUnited States, asi pakupedzisira akakundwa muna 1852 neuto rehurumende rakaunganidzwa naEntre Ríos Federalist Gavhuna Justo José de Urquiza, uyo akapomera Rosas kuti haatevedzeri Federal Pact provisions for a National Constitution. Muna 1853, Federal Constitution yakagadzwa (Bumbiro reArgentina razvino, kuburikidza nekugadziriswa) uye Urquiza akasarudzwa Mutungamiri weArgentina Confederation. Zvisinei, pashure pa 1852
Muhondo yeCaseros, Dunhu reBuenos Aires rakanga rabuda muConfederation. Muna 1859, pashure peHondo yeCepeda State yeBuenos Aires yakabatanazve neConfederation, kunyange zvazvo yakapiwa kodzero yokuita zvimwe zvinogadziridzwa kuMutemo wayo. Pakupedzisira, pashure peHondo yePavón ya1861, Buenos Aires yakatora Confederation.