"The international courts tried the main leaders of the genocide" and "The traditional community courts returned many of the people who took part in the killings to their communities" seem like the only reasonable answers but I haven't taken this class in a while so my memory on this is a little foggy. I hope I helped.
Answer:
The Xanathar Guilds
Explanation:
Islamic World Started around the Seventh (7) century and still exist until today
The Mongol Empire existed between the 13th and 14th centuries in the eastern part of said.
Byzantium started around the period in 395 CE to 1453
Christendom started around the 11th century
While The Xanathar Guilds, though often considered as fiction or not real, was rumored to have started about a century ago.
Hence, the correct answer is The Xanathar Guilds
The Appalachian mountains because that was a border for them to prevent them from Basically going anywhere
