I will answer all your questions about west africa

Africa is comprised of desert, tropical, savanna grasslands, jungle and even subarctic climates. The top half of the continent is comprised of desert, and the Sahara Desert, the worlds hottest desert, is located in Northern Africa, and at 3.5 million square miles is approximately the size of the United States or China. The Nile River, which runs through 11 different countries in Africa, is the longest in the world, over 4,000 miles long. The worlds second largest lake and largest tropical lake is Lake Victoria, located in Uganda, Tanzania and Kenya. Africa is located in between the Atlantic Ocean and Indian Ocean, and to the north is the Mediterranean Sea. Africa is the only continent large enough to be in both the northern temperate and southern temperate zones. The equator also runs through several countries in Africa.

At 19,340 feet, the highest point in Africa is Mt. Kilimanjaro, located in Tanzania and is a popular mountain climbing destination. The lowest point on the African continent is Lake Asal, located in Djibouti, at 502 feet below sea level.