Aurelius killed Christians, while Pius was good to his people and kept peace and this was the way Marcus Aurelius and Antoninus Pius differed from each other. The correct option among all the options that are given in the question is the third option. I hope this is the answer you were looking for and it has helped you.
Abolitionists ended slavery
"Its<span> location limited its contact with other advanced cultures" would be the best option from the list, since a system of boundaries made it inadvantageous for people to both come and go from the territory. </span>
The ruling is that he is still a slave to him master even tho he is in a
slave free state. And that he would still have to go back home with his
master.
Hope this helps