Explore: Slavé (langue)

Libreville (; French: [libʁəvil]) is the capital and largest city of Gabon, located on the Gabon Estuary. Libreville occupies 65 square kilometres (25 sq mi) of the northwestern province of Estuaire. Libreville is also a port on the Gabon Estuary, near the Gulf of Guinea. As of the 2013 census, its population was 703,904. The area has been inhabited by the Mpongwe people since before the French acquired the land in 1839. It was later an American Christian mission, and a slave resettlement site, before becoming the chief port of the colony of French Equatorial Africa. By the time of Gabonese independence in 1960, the city was a trading post and minor administrative centre with a population of 32,000. Since 1960, Libreville has grown rapidly and now is home to one-third of the national population.

Saint-Louis (French pronunciation: [sɛ̃ lwi] ) or Saint Louis (Wolof: Ndar), is the capital of Senegal's Saint-Louis Region. Located in the northwest of Senegal, near the mouth of the Senegal River, and 320 kilometres (200 mi) north of Senegal's capital city Dakar. It had a population of 254,171 in 2023. Saint-Louis was the capital of the French colony of Senegal from 1673 until 1902 and French West Africa from 1895 until 1902, when the capital was moved to Dakar. From 1920 to 1957, it also served as the capital of the neighboring colony of Mauritania. The town was an important economic center during the period of French West Africa, but it is less important now. Nonetheless, it still has important industries, including tourism, a commercial center, sugar production, and fishing. The tourism industry is in part due to the city being listed as a UNESCO World Heritage Site in 2000. However, the city is also vulnerable to climate change—where sea level rise is expected to threaten the city center and potentially damage historical parts of the city; according to a Senegalese government study, up to 80% of the city could be at risk of flooding by 2080. Moreover, other issues such as overfishing are causing ripple effects in the local economy.