Ka rubuta ci gaba don wannan sakin layi - Bayan haka, an yi yaƙe-yaƙe na ƙabilanci da suka kai kusan shekaru ashirin. Juan Lavalle ya yi ƙoƙari ya dauki mataki na soja a kan Rosas, amma an ci shi a yakin Marquez Bridge a 1829. Tare da goyon baya daga wasu larduna, Justo José de Urquiza, "caudillo" na lardin Entre Ríos, a ƙarshe ya ci Rosas a Yaƙin Caseros
a ranar 3 ga Fabrairu, 1852. A watan Mayu, Gwamnonin lardin sun sanya hannu kan Yarjejeniyar San Nicolás. Yarjejeniyar ta dawo da yarjejeniyar da aka sanya hannu a 1831 ta Argentina da lardunan ciki kuma ta yi kira ga taron kundin tsarin mulki.