<span>to show that slavery is a terrible practice that has brought misery to too many people
It's clear that he thinks far too many people have been made miserable by slavery when he says "</span><span>that so great a part of it", meaning that so many people of the world have been afflicted by slavery. It's also clear that he thinks it is a terrible practice, as he uses the phrases "bound in chains of darkness and in chains of misery". </span>
Answer: Question 15 is asking you to submit your character sketch. Character sketch: Demonstrate the personality, habits, Physical appearance, and even how they react to certain things(Stress, people, etc.) And its asking to make sure you have no mistakes, and to make sure that everything is made uniform or whole(Logical and consistent). Sorry if i'm wrong.
Rereads the text for answers and to see if you have more questions
I think it was The Norman conquest, but i’m not sure!