Hi there! It's great to hear you're interested in African kings and their history. There is a fascinating and rich history to explore! Depending on the region, African kings have had different titles such as Pharaohs, Emperors, and Sultanates. African kings have held power since Ancient Egypt, where they were known as Pharaohs. Later on, in the African empires of Mali and Songhai, the rulers were known as Sultans. In the 19th century, the Europeans divided much of Africa into colonies, which brought about the establishment of European-style monarchies.
If you're looking for a specific region or kingdom, Wikipedia is a great starting point for further research. There are also many books dedicated to the history of African kings and you can find many studies and articles online. I hope this helps you on your exploration of African kings and their history!