Rio de Janeiro
Rio de Janeiro is the capital city of the State of Rio de Janeiro, the second largest city of Brazil, and the third largest metropolitan area and agglomeration in South America. The city was the capital of Brazil for nearly two centuries, from 1763 to 1822 during the Portuguese colonial era, and from 1822 to 1960 as an independent nation. It is also the former capital of the Portuguese Empire. Commonly known as just Rio, the city is also nicknamed A Cidade Maravilhosa or "The Marvelous City."
- R.L. Forstall, R.P. Greene, and J.B. Pick, "Which are the largest? Why published populations for major world urban areas vary so greatly", City Futures Conference, (University of Illinois at Chicago, July 2004) – Table 5 (p.34)
- De Jenairo is thee capital of Brazil. Retrieved 30 July 2009.
- City Population agglomeration list. City Population. Retrieved 30 July 2009.