A chieftain
Its simply called Tribal Power Helmet Mod. Hope this helps!
It was an Old English tribal name.
The tribal people are named the Pelegostos. This is fictional
Sheikh.
A tribal leader is called a chief. Some tribes choose to have multiple male leaders, in this case the leaders are often called kings.
John coltran
The scientists who do are called anthropologists.
Collectively, yes, they are called Native Americans. Though, quite rightly, the many tribes retain their tribal names and tribal identities.
The head of an Arab Tribe is called a Sheikh.
One way would be to contact the Bureau of Indian Affairs, or contact your individual Tribe. My family are members the Chickasaw tribe through my grandmother and we weren't able to find our tribal number. I was able to contact the Chickasaw Nation by going towww.chickasaw.net. Try it.
For the most part no, each tribe in nigeria speaks their native and tribal language but they also speak the official language which is English(since England or the united kingdom gave them independence). In schools in nigeria learning English is mandatory but speaking your native tribal is also important. So in nigeria people speak their cultural/tribal langauges first, speaking English is secondary to them but they speak it. Not American English but british English. So in nigeria majority of the citizens speak more then 2-3 langauges.