1851 in Argentina
Events in the year 1851 in Argentina.
Incumbents
Events
- May 1 – governors Justo José de Urquiza of Entre Rios and Benjamin Virasoro of Corrientes rise up against Rosas
- May 29 – Corrientes and Entre Rios enter into alliance with Uruguay and Empire of Brazil
- August 18 – Rosas declares war on Empire of Brazil
Births
- March 19 – Roque Sáenz Peña, President 1910–1914
Deaths
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