When he was 32 years old in the cave of hira jibril came to have and told him read! and said verses
The slave trade brought about a negative impact on African societies and led to the long-term impoverishment of West Africa. This intensified effects that were already present amongst its rulers, kinships, kingdoms and in society.
Answer D
It's not answer A because its wording does not make sense. Along with that, It's not B or C because practicing new skills is only a part of why they made tools, and to learn a craft also doesn't make sense. So, it just made life easier to have tools.
I think it would be the failure to pass treaties. European nations are often in conflict over land territories and vast riches of the country. Another reason why the European countries always care in conflict, it would be religion. Many of them are firm believers Christianity. I think this was the reason why there was Crusades occur.