It would be primarily "The Church and the Crusades" that <span>played a significant role in uniting the kings and people of Europe, since adhering to religious principles back then was the norm for most. </span>
Before the Europeans came over to Africa, they had a slave trade. Africans in power, such as kings, would capture other Africans and enslave them, especially if they were from a tribe they were fighting. When the Europeans came over, the African kings started to trade these captured people for technology, like guns. The Europeans would them put them onto miserable ships and they would be brought over to America.
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D. Writing techniques that are consistently used in books that you like
