The answer is either A or C
the correct answer is B
a slave who was suing for his freedom because his master had taken him into free territory
the dred scott involved a slave who had travelled with his master to a free territorry. The slave brought the challenge after his master deathon his own and behalf of his wife over his freedom. The court ruled against him, arguing that slaves could not be granted citizenship.
They hoped it could gain improvements through arbitration. Arbitration is essentially using a mediator to settle a dispute. Though arbitration usually refers to political disputes.
They believed that native Americans were treated harshly due to the conditions they were put in like reservations