Bukavu, South Kivu, (East) Democratic Republic of Congo

It was originally named “Costermansville” (in French) or “Costermansstad” (in Dutch) under Belgian rule. The most spoken languages in Bukavu are French and Swahili (and multiple dialects of Swahili is spoken by the people) but people also speak their native tongue. Swahili was spread by the Arabs and Waswahili from Zanzibar even before the arrival of French.