Answer:
They were Ghana, Songhai, and Mali.
Explanation:
So now that we have named the kingdoms that arose in West Africa, let's explore what they have in common.
They were mostly African in origin, and several of them developed into merchant nations after becoming wealthy via commerce.
Many people united themselves via at least one religion, with their king serving as the head of that religion.
Most created fortified towns and cities, and some had cavalry.
Most people have created various ways of communication at various times, with the majority employing ideographs or sending messages using instruments.
Many were economic giants, but most, if not all, started to fall in the 1890s.
By the time colonization arrived, many were in freefall, whether it be in economy or the state of their unity.
Hope this helps!
