What man created artwork that had scientific as well as artistic value

What is walt whitman's poem "when i heard the learn'd astronomer about?

What was one of the main accomplishments of louis ix? a) he was made a saint after his death b) he eliminated trials by jury. c) he called the first french parliament. d) he ended the taxation system.

The ideas contained in the declaration of independence was most influenced by a. absolute monarchy b. the federal system c. anti-authoritarianism d. the social contract theory