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Establishment of Fortaleza Protectora Argentina

When
11 April 1828
Where
Blanca Bay
Part of
Founding of Bahía Blanca

Colonel Ramón Estomba founded the fortress on April 11, 1828, on orders from Juan Manuel de Rosas to secure the southern frontier.

The settlement was established as a military fortress on the northwestern end of Blanca Bay. It was named Fortaleza Protectora Argentina to guard against cattle rustlers and the Brazilian navy. This action formalized the presence of Buenos Aires Province on the southern coast.

Sources

  1. Bahía Blanca Wikipedia, revision of 2026-09-30

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.