The source must come from a reliable source to start off with. The information has to be in the ballpark of a correct answer and the person who wrote it has to be knowledgeable enough to give opinions about the topic.
Answer:
Ashanti religion is where most of the people in Ghana subscribe to.
These are all part of it but the main one is they had to have it to be able to declare war
With the salve trade, the Europeans made some of the stronger African tribes along the coast heavily dependent on them. That was largely due to the profit and weapons that these tribes were getting from selling slaves to the Europeans.
The slave trade and the slavery though got abolished, thus the profit and weapons that the Africans were getting stopped. That resulted in the weakening, and after several incidents with the Europeans, the Europeans attacked them one by one and managed to conquer and colonize them easily.