The State of Guanabara (Portuguese: Estado da Guanabara, IPA: [ɡwanaˈbaɾa]) was a Brazilian state that existed from 1960 to 1975 in the territory of the current municipality of Rio de Janeiro. In its area, it was located the old Federal District.
The State of Guanabara shares its name with Guanabara Bay, which lies to the east of the state. There are many theories as to the name's origins, including hidden water, lagoon of the sea, and bosom of the sea.
In 1834, the city of Rio de Janeiro was elevated to Imperial capital of the Empire of Brazil, but it was not part of any Brazilian province, having special status as the so-called Neutral Municipality (Portuguese: Município Neutro). The surrounding Province of Rio de Janeiro (which did not include the city) had its capital city in Niterói. When Brazil became a republic in 1889, the city of Rio de Janeiro remained the national capital and it was located in the Federal District (Portuguese: Distrito Federal), while the surrounding homonymous province became a state, still with Niterói as its capital.
Throughout its 15-year existence, Guanabara was a unique state in many ways. Comprising only one city (albeit a large one), Guanabara was the smallest Brazilian state by land. It also had the peculiarity of being the only Brazilian state that was not divided into municipalities. Although for some practical purposes, it was sometimes counted as having one single municipality, and Rio de Janeiro was officially named its capital, there was no mayor, municipal legislature or any other municipal government institution there, as the city of Rio de Janeiro was directly administered by the state government. On the other hand, that also meant that the Guanabara state government had some functions that were normally assigned to municipalities elsewhere, such as regulating urban zoning, inspecting the safety of buildings, or issuing licenses for commercial venues, for example.
All the characteristics disappeared in 1975, when the state of Guanabara merged into the state of Rio de Janeiro. With the merge, the capital of the state of Rio de Janeiro was transferred back from city of Niterói to city of Rio de Janeiro, as it was until 1834 when the empire created the Neutral Municipality.
In gubernatorial elections held on 3 October 1965, Francisco Negrão de Lima, a candidate supported by a coalition formed by PTB and PSD and a close associate of former President Juscelino Kubitschek, won the race to be the state's governor, garnering 52% of the votes cast.
Of the indigenous tribes that lived along its banks, there are now only reports, a few middens and the original Tupi-Guarani names that continue to identify the geographical features and places along its shores, starting with its own name, Guanabara, or “bosom of the sea”...