The answer is C. Aswan ( APEX )
The antislavery movement raised and grew because people kept finding reasons for why slavery is bad. This eventually led to conflict between people against slavery and people for slavery. Another reason why the antislavery movement raised and grew was because slavery has become less useful overtime, as we have machines.
Witnesses?
Your question doesn't really have all the information necessary to have an accurate answer.
<span>a.
Before slavery, Blacks were uncivilized. Hope this helps!:)</span>