French blockade of the Río de la Plata
| French blockade of the Río de la Plata | |||||||
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| Part of the War of the Confederation and Guerra Grande | |||||||
1841 portrait by Cayetano Descalzi of the Argentine Juan Manuel de Rosas, who emerged victorious in the conflict against France | |||||||
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| Belligerents | |||||||
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Argentine Confederation Supported by: Blancos |
France Supported by: Unitarians Colorados | ||||||
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The French blockade of the Río de la Plata was a two-year-long naval blockade imposed by France on the Argentine Confederation ruled by Juan Manuel de Rosas. It closed Buenos Aires to naval commerce. It was imposed in 1838 to support the Peru–Bolivian Confederation in the War of the Confederation, but continued after the end of the war. France did not land ground forces, but instead took advantage of the Uruguayan Civil War and the Argentine Civil Wars, supporting Fructuoso Rivera and Juan Antonio Lavalleja against Manuel Oribe and Rosas.
After two years without the expected results, France signed the Mackau-Arana treaty with the Argentine Confederation, ending the hostilities.