Mezue ahịrịokwu na-esonụ: Gọvanọ Buenos Aires bụ Juan Manuel de Rosas gosipụtara ikike na-arịwanye elu na mba ndị ọzọ n'oge ọchịchị 1835-1852 ya ma guzogide ọtụtụ nnupụisi nke Unitarian, ma emesịa
E meriri ya na 1852 site na ndị agha jikọtara ọnụ nke Gọvanọ Justo José de Urquiza, bụ onye na-achị Entre Ríos Federalist, bụ onye boro Rosas ebubo na ọ naghị eme ihe iwu Federal Pact kwuru maka Iwu Mba. N'afọ 1853, e tiri iwu gọọmentị etiti (iwu nke Argentine ugbu a, site na mmegharị) wee họpụta Urquiza Onye isi ala nke Argentine Confederation. Otú ọ dị, mgbe agha Caseros nke 1852 gasịrị, Ógbè Buenos Aires kewapụrụ onwe ya na Confederation. Na 1859, mgbe Agha nke Cepeda gasịrị, steeti Buenos Aires sonyeere Confederation, ọ bụ ezie na e nyere ya ikike ime mgbanwe ụfọdụ na Iwu ya. N'ikpeazụ, mgbe Agha Pavón nke 1861 gasịrị, Buenos Aires weghaara Njikọ ahụ.