Rambai muchinyora ndima ino - Kurambidzwa kweArgentina kweMontevideo kwakanga kusingabatsiri sezvo Rosas kazhinji akaedza kusapindira mukutakura kwenyika dzakawanda paRwizi Plate asi, muna 1845, apo kupinda kuParaguay kwakavharwa, Great Britain neFrance vakabatana naRosas, vakatora ngarava yake ndokutanga kurambidzwa kweBuenos Aires, nepo Brazil yakabatana muhondo neArgentina. Rosas akasvika pazvibvumirano zvorugare neGreat Britain neFrance muna 1849 na1850. VaFrench vakabvuma kubvisa legion yavo kana Rosas akabvisa mauto eArgentina kubva kuUruguay. Oribe akanga achiri kukomba guta guru zvishoma nezvishoma. Muna 1851, mutongi weArgentina aiva nesimba Justo José de Urquiza akatendeukira kuna Rosas ndokusainirana chibvumirano nevaUnitarios vakanga vaendeswa kune dzimwe nyika, nevaColorado vokuUruguay uye vokuBrazil vachirwisana naye. Urquiza akayambukira kuUruguay, akakunda Oribe ndokubvisa kukombwa kweMontevideo. Akabva akurira Rosas paHondo yeCaseros
musi waFebruary 3, 1852. Nokukundwa kwaRosas uye kutapwa, "Guerra Grande" pakupedzisira yakaguma. Uranda hwakabviswa zviri pamutemo muna 1852. Kutonga kwakatungamirirwa naRivera, Lavalleja naVenancio Flores kwakagadzwa, asi Lavalleja akafa muna 1853, Rivera muna 1854 uye Flores akakundwa muna 1855.