Answer:
I am pretty sure its Economic reasons.
Explanation:
The line was made obsolete. The new arrangement was meant to be local voting on slavery in the new states of Nebraska and Kansas.
I hope this helps.( have a nice day !!)
It would be "C. the Virginia Bill of Rights" that is not considered a landmark document of English history, since this was instead considered to be a major document in the colonies, where it was written.