Mark the statement if it correctly describes the beginning of the decline of the roman empire.
a. very few roman emperors in the centuries after augustus were competent rulers; most were insane, greedy, or both.
b. exposure to diseases from other lands killed many romans.
c. the roman empire, expansive as it was, could

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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