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.
Kisangani
Some 1300 mi from the mouth of the Congo River, Kisangani is the farthest navigable point upstream. Kisangani is the nation's most important inland port after Kinshasa, an important commercial hub point for river and land transportation and a major marketing and distribution centre for the north-eastern part of the country. It has been the commercial capital of the northern Congo since the late 19th century.