1870 in Argentina

Incumbents

• President: Domingo Faustino Sarmiento
• Vice President: Adolfo Alsina

  Events

• 1 March - End of the Paraguayan War. Following this, Argentina seeks to enforce one of the secret clauses of the Treaty of the Triple Alliance, which would have permitted it to annex a large portion of the Gran Chaco region. The Brazilian government, wishing to maintain Paraguay as a buffer with Argentina, it rejects the Argentine proposal.

  Births

• 21 February – Victor Mercante, educationist

  Deaths

• 12 March – Pastor Obligado, lawyer, Governor of the secessionist State of Buenos Aires 1853–1858
• 11 April – Justo José de Urquiza, politician and general