Republic of the Congo (Léopoldville)
The Republic of the Congo () was a sovereign state in Central Africa that was created with the independence of the Belgian Congo in 1960. From 1960 to 1966, the country was often known as "Congo-Léopoldville" (after its capital) in order to distinguish it from its north-western neighbour, also called the Republic of the Congo or Congo-Brazzaville. With the renaming of Léopoldville as Kinshasa on 1 June 1966, it was known as "Congo-Kinshasa" until 1971.
Brazzaville
As of the 2007 census, it had a population of 1.37 million. The projection of the CNSEE (national statistics centre) shows an increase to 1.7 million by 2015, but the projection was made before 2007 and based on a lower estimate of the population (1.26 million) than recorded in the census. The United Nations Population Division estimate for 2014 is 1.83 million. The populous city of Kinshasa (more than 10 million inhabitants in 2014), capital of the Democratic Republic of the Congo, lies across the Congo River from Brazzaville. Together with Kinshasa, the combined conurbation of Kinshasa-Brazzaville would thus have about 12 million inhabitants, although significant political and infrastructure challenges prevent the two cities from functioning with any meaningful connection.