This concept map of Equatorial Africa represents a complete summary scheme for studying territory, climate, population, and economy. The area extends from the southern Sahel to the Democratic Republic of Congo and Tanzania. The geographic summary highlights the presence of the equatorial rainforest in the Congo Basin and along the Gulf of Guinea, while to the north the savanna develops. The territory includes important reliefs such as Kilimanjaro and large rivers such as the Congo and Niger. The climate is predominantly hot-humid equatorial, with rainy tropical zones and temperate areas on the reliefs. The population is concentrated along the coasts and in the highlands; Nigeria is the most populous state in Africa.