Rubuta ci gaba don wannan sakin layi - Tarayyar Argentine, wacce ta kunshi larduna goma sha uku a cikin ciki, da kuma Jihar Buenos Aires, wacce aka kafa ta lardin Buenos Aires ta raba abin da a yau yake Argentina tun daga yakin Caseros na 1852
ya cire babban Gwamnan Buenos Aires, Juan Manuel de Rosas (wanda ya mallaki dukkan ikon jama'a tun 1835, don haka ya kiyaye al'ummar da ke da haɗin kai). Rarraba ya faru ne saboda ƙin yarda da Buenos Aires don amincewa da Yarjejeniyar San Nicolás ta 1853 ko kuma amince da Kundin Tsarin Mulki na Argentina, wanda aka zartar a wannan shekarar.