which gathered much information as possible about all the newspapers published in all provinces since the time of the viceroys until the fall of Juan Manuel de Rosas.
At that time Prilidiano Pueyrredón was living in Rio with his family, as well as other intellectuals opposed to the regime of Juan Manuel de Rosas including Bernardino Rivadavia, José María Gutiérrez and Juan Bautista Alberdi.
While negotiating peace with the empire, Canabarro offered his services to Juan Manuel de Rosas, ruler of Argentina, who wanted to expand the borders of his country.
He distinguished himself during the 1850s when, as Minister of Foreign Affairs, he organized the Brazilian Diplomatic Corps and structured the entire Brazilian policy of intervention in the River Plate against Juan Manuel de Rosas from Argentina, and Manuel Oribe from Uruguay.
San Juan | Juan Carlos I of Spain | Don Juan | Santurce, San Juan, Puerto Rico | Juan Gabriel | Juan Perón | Manuel Noriega | Juan Pablo Montoya | Joan Manuel Serrat | Strait of Juan de Fuca | Juan Ramón Jiménez | Juan Luna | San Juan, Metro Manila | San Juan Islands | San Juan, Argentina | Manuel I of Portugal | San Juan del Sur | Manuel de Falla | Juan Manuel Santos | Juan Gris | Juan | Old San Juan | Manuel L. Quezon | Manuel Belgrano | Manuel Alejandro | Juan Mónaco | Juan Luis Guerra | Juan de Padilla | San Juan de la Maguana | Manuel Castells |
After independence, he participated in the League of the North and consequently had to live in exile in Livi-Livi close to Tupiza, Bolivia, until the fall of Juan Manuel de Rosas.
Buenos Aires Governor Juan Manuel de Rosas exerted a growing hegemony over the rest of the country during his 1835-1852 Government and resisted several Unitarian uprisings, but was finally defeated in 1852 by a coalition Army gathered by Entre Ríos Federalist Governor Justo José de Urquiza, who accused Rosas of not complying with Federal Pact provisions for a National Constitution.