The answer is B, because the cause of the Sudan civil war was a clear split between north and south Sudan. You can also see other examples like the unhappy Kurdish minorities in Syria, Turkey, and Iraq.
The wages would usually be cut down since there was a monopoly established and there was no competition so they didn't have anywhere to go.
The River Nile<span> is in the beautiful continent of Africa. It originates inside Burundi, south of the equator, and flows northward to northeastern Africa, eventually flowing through Egypt and then draining into the Mediterranean Sea.</span>