During the Dark Ages, how did the Chinese capitalize on inventions such as iron, paper, money, porcelain, and gun powder?

donald carl johanson (born june 28, 1943) is an american paleoanthropologist. he is known for discovering – with yves coppens and maurice taieb – the fossil of a female hominin australopithecine known as "lucy" in the afar triangle region of hadar, ethiopia.

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islam spread slowly through much of africa through trade and preaching.

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the answer is choice (b)