Rubuta ci gaba don wannan sakin layi - A cikin 1838, Masarautar Faransa ta fara toshewar ruwa a kan tashar jiragen ruwa na Buenos Aires, don tallafawa Peru<unk>Bolivian Confederation, wanda ya ayyana Yaƙin Confederation a kan Confederation na Argentina. Ba tare da iya tura sojojin ƙasa ba, Faransa ta nemi sojojin da ke da alaƙa don yaƙi da Juan Manuel de Rosas - gwamnan Confederation na Argentina, a madadinsu. Don wannan dalili sun taimaka wa Fructuoso Rivera ya hambarar da shugaban kasar Uruguay Manuel Oribe, wanda ya kasance cikin kyakkyawar dangantaka da Rosas. An kori Oribe zuwa Buenos Aires kuma Rivera ya karbi iko a watan Oktoba 1838. Rosas bai yarda da Rivera a matsayin halattaccen shugaban kasa ba, kuma ya nemi dawo da Oribe a mulki. Rivera da Juan Lavalle sun shirya sojojin don kai hari kan Buenos Aires. Sojojin Burtaniya da Faransa sun shiga tsakani, sun fara yakin basasa na Uruguay
, ko kuma "Guerra Grande" (Babban Yaƙi).