Río de la Plata
Battle of Monte Santiago (1827)

Near the coast of Ensenada in April 7, four Argentine vessels led by Brown slipped out of port in an unsuccessful attempt to surprise a large Brazilian fleet under the command of Norton. Two brigs were sunk, and a schooner was heavily damaged, resulting in a decisive Brazilian victory that ensured the Imperial blockade of the Río de la Plata until the Preliminary Peace Convention of 1828.

The blockade caused serious problems to the export-oriented economy of Buenos Aires but indirectly contributed to rural provinces such as Córdoba, allowing producers to sell native products to Buenos Aires at an increased price.
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