What was the invention that "revolutionized the diffusion of knowledge"

In 1846, the United States Congress established the Smithsonian Institution, dedicated to “the increase and diffusion of knowledge,” using both the bequest and the language from British scientist James Smithson’s will. Higher education differs from the Smithsonian, which combines cutting-edge research with a network of museums staffed in part by scholars and freely accessible to the public.

Explanation:

the answer is c.

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`stare decisis is a legal doctrine that obligates courts to follow historical cases when making a ruling on a similar current or future case. stare decisis ensures that cases with identical facts be approached in the same way, unless overruled by the same court or a higher court such as the us supreme court. simply put, it binds courts to follow legal precedents set by previous decisions.

stare decisis is a latin term meaning "to stand by that which is decided".