The tenth amendment of the u. s. constitution
reserves to the states any powers not delegated to the national government
reserves to the national government any powers not delegated to the states
implies that certain powers are the responsibility of the national government
implies that certain powers are the responsibility of the state governments

The Tenth Amendment of the U.S. Constitution

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answer: an oligarchy is a political system in which the government is run by a group of noble families, or the elite wealthy members of a society. a present day oligarchic government is iran.

explanation:

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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i googled "who was kolson johanson" and this is the answer i found.

sorry if this is incorrect.