Final answer:
The largest lake in the African Great Lakes region is Lake Victoria, the second-largest lake in the world by surface area. It borders Uganda, Kenya, and Tanzania and is the source of the White Nile River.
Step-by-step explanation:
The largest of the African Great Lakes is Lake Victoria. This massive lake is also ranked as the second largest in the world by surface area, surpassed only by Lake Superior in North America. Spanning the borders of Uganda, Kenya, and Tanzania, Lake Victoria plays a critical role in the local ecosystem and regional economy, providing fresh water and fisheries resources to millions. It is also the source of the White Nile River, contributing significantly to the Nile basin.
Among other lakes in the Great Rift Valley, such as Lake Malawi, Lake Tanganyika, and Lake Albert, Lake Victoria stands out for its size. While Lake Tanganyika is noted for its depth, being the second deepest lake in the world, and Lake Malawi for its incredible biodiversity, particularly the cichlid fish species, Lake Victoria is expansive, with an area of about 68,800 square kilometers. It is a central feature in the surrounding countries' economies, geography, and climates.