Editing 1840s (section)

=== South America ===

==== Brazil ====
* [[July 23]], [[1840]] – [[Pedro II of Brazil|Pedro II]] is declared "of age" prematurely and begins to reassert central control in [[Brazil]].
* [[July 18]], [[1841]] – [[Coronation]] ceremony of Emperor [[Pedro II of Brazil]] in [[Rio de Janeiro]].
* [[January 20]], [[1843]] – [[Honório Hermeto Carneiro Leão, Marquis of Paraná]], becomes ''de facto'' first [[Prime Minister of Brazil|prime minister]] of the [[Empire of Brazil]].
* [[September 4]], [[1843]] – The Emperor Dom [[Pedro II of Brazil]] marries Dona [[Teresa Cristina of the Two Sicilies]] in a state ceremony in [[Old Cathedral of Rio de Janeiro|Rio de Janeiro Cathedral]].

==== Uruguay ====
* [[February 3]], [[1843]] – [[Argentina]] supports Rosas of [[Uruguay]] and begins a siege of [[Montevideo]].

==== Paraguay ====
* [[1844]] – [[Carlos Antonio López]] becomes dictator of [[Paraguay]].

==== Argentina ====
* [[September 18]], [[1845]] – [[Anglo-French blockade of the Río de la Plata]] formally declared.
* [[November 20]], [[1845]] – Anglo-French blockade of the Río de la Plata: [[Battle of Vuelta de Obligado]]: The [[Argentine Confederation]] is narrowly defeated by an [[Anglo]]-[[France|French]] fleet on the waters of the [[Paraná River]] but Argentina attracts political support in South America.

==== Venezuela ====
* [[1843]] – [[Germans]] from the [[Black Forest]] region of Southern [[Baden]] migrate to [[Venezuela]].

==== Peru ====
* [[April 20]], [[1845]] – [[Ramón Castilla]] becomes president of [[Peru]].

==== Chile ====
* [[May 23]], [[1843]] – [[Chile]] takes possession of the [[Strait of Magellan]].