The lack of Peace agreements definitely contributed as did the conflicts between tribes, I am not even sure what is meant by the first choice, there was no African nationalism at the time so I eliminate it as the choice also. That leaves C. It makes no sense that traders would use guns as methods of trade. The tribes at the time didn't have guns, slave traders would not want them to be able to kill rather than capture so the only ones who has guns were the traders and they wouldn't have given them up because it gave them the up because it gave them the upper hand over the natives they were trading with.
Hope this helped :)
Then it gives the reader a sense of this was not a "Famous writer" but a sense that this "Was a person like me" making it more personal
The humans stopped being nomadic hunter-gatherers and were able to make their own food, instead of chasing it down, and cultures were able to be established. Mesopotamia is one example; nomadic tribes can together, learned to farm, and established a culture(and later a civilization).
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Union Army summary: The Union Army (aka the Federal Army, or Northern Army) was the army that fought for the Union. it was comprised of several armies, to cover the many departments in which the war was fought. Union armies were named for primary bodies of water within their department.
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