Yes, it is true that linguists do not know for certain how language was developed by early humans, but they're able to determine that it started somewhere in Africa, due to human migration patterns.
identification with one's own nation and support for its interests, especially to the exclusion or detriment of the interests of other nations.
Answer:
He used the slaves as miners to chop wood for smelting and as hunter to feed the miners
I think you have the right answer (D). (:
