Answer:
O C. It was the area first explored by Europeans.
Step-by-step explanation:
There is more information known about West African societies than other African societies from the early modern period because It was the area first explored by Europeans traders. In the 15th century, the arrival of European sea traders at the Guinea coastlands were the first group of Europe who discovered the land and had a great impact on the history of all of western Africa. So we can say that European exploration is the main reason for more information about west African societies.