British forces attack Buenos Aires twice during …

Years: 1804 - 1815
British forces attack Buenos Aires twice during the British invasions of the Río de la Plata.

In 1806 the British successfully invade Buenos Aires, but an army from Montevideo led by Santiago de Liniers defeats them.

In the brief period of British rule, the viceroy Rafael Sobremonte manages to escape to Córdoba and designate this city as capital.

Buenos Aires becomes the capital again after its liberation, but Sobremonte cannot resume his duties as viceroy.

Santiago de Liniers, chosen as new viceroy, prepares the city against a possible new British attack and repel the attempted invasion of 1807.

The militarization generated in society changes the balance of power favorably for the criollos (in contrast to peninsulares), as well as the development of the Peninsular War in Spain.

An attempt by the peninsular merchant Martín de Álzaga to remove Liniers and replace him with a Junta is defeated by the criollo armies.

However, by 1810 it is these same armies who support a new revolutionary attempt, successfully removing the new viceroy Baltasar Hidalgo de Cisneros.

This is known as the May Revolution, which is now celebrated as a national holiday.

This event starts the Argentine War of Independence, and many armies leave Buenos Aires to fight the diverse strongholds of royalist resistance, with varying levels of success.

The government is held first by two Juntas of many members, then by two triumvirates, and finally by a unipersonal office, the Supreme Director.

Buenos Aires manages to endure the whole Spanish American wars of independence without falling again under royalist rule.

Formal independence from Spain will be declared in 1816, at the Congress of Tucumán.

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