This country is located in an area that corresponds with the Ilemi Triangle. The first recognized ruler of this country was Bashenga, whose spear is used to designate the ruling chieftain. The Border Tribes of this country were attacked by Ulysses Klaue as he stole its most valuable material. This country manages an outreach center in Oakland, where a member of this country's royal family was killed, leaving his son fatherless. That son was Erik Killmonger. For 10 points, name this country rich in vibranium where T'challa succeeded T'Chaka as king, the fictional setting of Marvel's Black Panther.
a) Sokovia
b) Wakanda
c) Zamunda
d) Genosha