Title: Rio de Janeiro
Content:  Rio de Janeiro, or simply Rio, is the second-most populous city in Brazil and the sixth-most populous in the Americas. Rio de Janeiro is the capital of the state of Rio de Janeiro, Brazil's third-most populous state, after São Paulo and Minas Gerais. Part of the city has been designated as a World Heritage Site, named "Rio de Janeiro: Carioca Landscapes between the Mountain and the Sea", on 1 July 2012 as a Cultural Landscape. Founded in 1565 by the Portuguese, the city was initially the seat of the Captaincy of Rio de Janeiro, a domain of the Portuguese Empire. In 1763, it became the capital 
Title: Outline of Rio de Janeiro
Content:  The following outline is provided as an overview of and topical guide to Rio de Janeiro: Rio de Janeiro &ndash; capital and most populous city of Rio de Janeiro state, and the second most populous city in Brazil, Rio de Janeiro was founded in 1565 by the Portuguese as part of the Portuguese Empire. It was the capital and political center of Brazil, where events like the Proclamation of the Republic took place. Brasília overtook Rio de Janeiro as the new capital of Brazil in 1960. Rio de Janeiro is known for its cultural riches, such as Carnival, samba and bossa nova, beaches such as Copacabana and Ipanema, and also for the Christ the Redeemer statue overlooking the city. Major education institutions include the Federal University of Rio de Janeiro, the Rio de Janeiro State University, and Colégio Pedro II.
Title: Rio de Janeiro (state)
Content:  south by the South Atlantic Ocean. Rio de Janeiro has an area of 43653 km². Its capital is the city of Rio de Janeiro, which was the capital of the Portuguese Colony of Brazil from 1763 to 1815, of the following United Kingdom of Portugal, Brazil and the Algarves from 1815 to 1822, and of later independent Brazil as a kingdom and republic from 1822 to 1960. The state's 22 largest cities are Rio de Janeiro, São Gonçalo, Duque de Caxias, Nova Iguaçu, Niterói, Campos dos Goytacazes, Belford Roxo, São João de Meriti, Petrópolis, Volta Redonda, Magé, Macaé, Itaboraí, Cabo 
Title: Rio de Janeiro
Content:  city in one of its colonies. Rio de Janeiro subsequently served as the capital of the independent monarchy, the Empire of Brazil, until 1889, and then the capital of a republican Brazil until 1960 when the capital was transferred to Brasília. Rio de Janeiro has the second-largest municipal GDP in the country, and 30th-largest in the world in 2008. This is estimated at about R$343 billion (nearly US$201 billion). It is headquarters to Brazilian oil, mining, and telecommunications companies, including two of the country's major corporations – Petrobras and Vale – and Latin America's largest telemedia conglomerate, Grupo Globo. The home of many universities and 
Title: Outline of Rio de Janeiro
Content: Rio de Janeiro is: ; a city ; capital of Rio de Janeiro (state) ; Population of Rio de Janeiro: 7,456,682 ; Area of Rio de Janeiro: 1,221 km2 (486.5 sq mi) Geography of Rio de Janeiro
Title: List of mayors of Rio de Janeiro
Content:  The city of Rio de Janeiro was founded in 1565. It was the seat of the Crown captaincy of Rio de Janeiro, a district of colonial Brazil under Portuguese rule. In 1763 Rio de Janeiro city became the capital of the colony, then named State of Brazil. In 1815 Brazil became a kingdom within the United Kingdom of Portugal, Brazil and the Algarves; the captaincy of Rio de Janeiro became the province of Rio de Janeiro, within the Kingdom of Brazil, and the city of Rio de Janeiro continued to be the capital of both the Kingdom and the Province. Also, the 
Title: Rio de Janeiro
Content:  Rio de Janeiro is a part of the Union of Ibero-American Capital Cities.
Title: Rio de Janeiro (state)
Content:  In 1834, the city of Rio de Janeiro was transformed into a "neutral city", remaining as capital of the state, while the captainships became provinces, with headquarters in Niterói, a neighbouring city. In 1889, the city became the capital of the Republic, the neutral city became the federal district and the province a state. In 1894, Petrópolis became the capital of Rio de Janeiro, until 1902 when Niterói recovered its capital status. With the relocation of the federal capital to Brasília in 1960, the city of Rio de Janeiro became Guanabara State. Niterói remained the state capital for Rio de Janeiro state, while Rio de Janeiro served the same status for Guanabara.
Title: Outline of Rio de Janeiro
Content: Rio de Janeiro during the Portuguese Empire (1565–1815) ; São Sebastião do Rio de Janeiro founded by the Portuguese (1 March 1565) ; The colonial capital in Portuguese America is transferred to Rio de Janeiro from Salvador (27 January 1763) ; The city becomes capital of Kingdom of Portugal (1808) ; Rio de Janeiro during the United Kingdom of PBA (1815–1822) ; Rio becomes capital of the United Kingdom of Portugal, Brazil and the Algarves (1815) ; Rio de Janeiro during the Empire of Brazil (1822–1889) ; After the declaration of Brazil's independence in 1822, Rio de Janeiro becomes the capital of the new empire (1822–1889) ; Rio de Janeiro during the Republican period (1889–present) ; The city becomes capital of the republic of Brazil (1889) ; The Brazilian capital is officially moved to Brasília (21 April 1960) ; A presidential decree removes the city's federative status and merges it with the State of Rio de Janeiro, with the city of Rio de Janeiro replacing Niterói as the state's capital, and establishing the Rio de Janeiro Metropolitan Region (1975) Timeline of Rio de Janeiro
Title: Provinces of Brazil
Content:  Rio de Janeiro City, the imperial capital, was removed from the Province of Rio de Janeiro, and was included in the Neutral Municipality. At the same time, the capital of the Province of Rio de Janeiro was transferred to Niterói.

Question: What is Rio de Janeiro the capital of?
Answer: State of Brazil.
Brazil.
Federative Republic of Brazil.
BR.
BRA.
br.
🇧🇷.
Rio de Janeiro.
Rio de Janeiro state.
RJ.
Rio de Janeiro (state).