What is Africa's second-longest river, which has its principal sources in the Lualaba and Chambeshi rivers?

The Congo River is indeed Africa's second-longest river, following the Nile. It flows a substantial distance of approximately 4,700 kilometers (about 2,920 miles) and is known for its impressive drainage basin, which covers a significant portion of Central Africa. The river's principal sources are the Lualaba River in the northeast and the Chambeshi River in Zambia.

This is significant as the Congo River plays a vital role in the ecology and economy of the region, providing essential resources for transportation, agriculture, and fisheries. Additionally, the Congo River system contains the largest rainforest in Africa, which is critical to global biodiversity. In contrast, the Zambezi, Niger, and Limpopo rivers, while significant in their own right, do not match the Congo in length or drainage area and have different source points and geographic importance.