The Preliminary Peace Convention accorded independence to Uruguay in respect to Brazil and Argentina. Uruguay’s independence would be definitively sealed on 4 October of the same year when, in Montevideo, the signing nations ratified the treaty.
The Independence of Brazil comprised a series of political and military events that occurred in 1821–1824, most of which involved disputes between Brazil and Portugal regarding the call for independence presented by the Brazilian Empire.
Honduras gained independence from Spain in 1821 and was a part of the First Mexican Empire until 1823, when it became part of the United Provinces of Central America. It has been an independent republic and has held regular elections since 1838.
The first confirmed sighting of mainland Antarctica is attributed to a Russian expedition led by Fabian Gottlieb von Bellingshausen and Mikhail Lazarev, discovering an ice shelf at Princess Martha Coast..