By the 1850s the constitution originally framed as an instrument of the national unity, had become a source of sectional discord and tension and ultimately contribute to the failure of the union it had created.
assess the validity of this statement

answer; the mayans and

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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