BrazilBrazil, officially the Federative Republic of Brazil , is the largest country in both South America and Latin America as well as the world's fifth-largest country by both area and population. The country is the largest to have Portuguese as an official language, and the only one in the Americas.Brasília, is the federal capital of Brazil and seat of government of the Federal District.Rio de Janeiro, or simply Rio,is the second most populous municipality in Brazil and the sixth largest city in the Americas.São Paulo, is a municipality located in the southeast region of Brazil.Recifeis the sixth-largest metropolitan area in Brazil.Belo Horizonteis the sixth largest city in Brazil.The Paraná Riveris a river in south Central South America, running through Brazil, Paraguay, and Argentina for some 4,880 kilometres (3,030 mi). It is second in length only to the Amazon River among South American rivers.The Amazon Riverin South America is the largest river by discharge of water in the world, and the longest in length.Rio Negrois the largest left tributary of the Amazon, the largest blackwater river in the world, and one of the world's ten largest rivers in average discharge.The Sao Francisco Riveris a river in Brazil. With a length of 2,914 kilometres (1,811 mi), it is the longest river that runs entirely in Brazilian territory.The Japurá River or Caquetá Riveris a river about 2,820 kilometres (1,750 mi) long (some sources[who?] say 2,414 km) rising as the Caquetá River in the Andes in southwest Colombia. It flows southeast into Brazil, where it is called the Japurá. The Japurá enters the Amazon River through a network of channels. It is navigable by small boats in Brazil.Pico da Neblinais the highest mountain in Brazil, 2,995.3 metres (9,827 ft) above sea level.