They were Gahandi and Henry David Thoreau
Colonists wanted to go west and get land.
Some think it was called this because of how the skin turned dark at the late stages of the disease, but it was more likely called "Black" to reflect the dark and horrible time in history.
Feudalism started around 8th century or 850 AD to be exact. Based from all the choices given, there is no right answer. So probably the closest is 900 A.D so I would have to go with that. But if there is a choice that is 850 A.D, that is the correct answer. I hope this answer helped you.