 Ramba uchinyora ndima iyi - Kutonga kwaRosas kwemakore 17 kwakapesvedzerwa nehondo yenguva dzose, zvose zviri zviviri kubva kuvateveri veUnitarian nedzimwe nyika. PeruBolivian Confederation, yakabatana neFrance, yakazivisa Hondo yeConfederation kurwisa Argentina neChile; France yakaitsigira nekumisikidza kukomberedza kwegungwapamusoro peBuenos Aires, iyo yakachengetedzwa kunyange pashure pokukundwa kwePeru-Bolivia. VaFrance vakabatsira Fructuoso Rivera kubvisa mutungamiri weUruguay Manuel Oribe pachigaro, saka Rivera akavabatsira kurwisa Rosas. France yakasiya kurambidzwa, asi Rosas achiri kutsigira Oribe muUruguayan Civil War kuti adzorere kutonga kwake muUruguay. Kurwisana naRivera kwakatungamirira kukakavadzana kutsva neFrance, nguva ino yakabatana neBritain. Kuvharirwa kweRío de la Plata kwakaitwa neEngland neFrance kwakakundwawo. Justo José de Urquiza, gavhuna weEntre Ríos, panguva iyoyo akafunga kuti yakanga yava nguva yaidiwa neFederal Pact kuti agadzire Bumbiro, asi Rosas akanga achiri kuchengeta pfungwa yake yokuzviita pashure pokunge mapurovhinzi ose atozvironga. Nechikamu chikuru cheuto reConfederation parutivi pake, uye vamwe vavakwikwidzi, Urquiza akakunda vose uto raOribe rakanga rakomba Montevideo uye ipapo Rosas pachake, muhondo yeCaseros. 