I'm assuming the Israelites, and because they were being treated badly. your question is confusing?<span />
To have laws and enfocement to enforce those laws and keep peace among citizens
The answer would be D.
D. Wealth of Knowledge-so much information was brought back from the Muslim "world"; information pertaining to medical knowledge, new forms of mathematics and education, "Aristotle was brought back," and "everything was brought back"; so many new ideas were brought back to Europe from the Muslim "world".
C. A complete human skeleton
Well i took this test a while ago, plus we learned about this not to long ago, and from what i remembered the correct answer to this would be a certain institution of a single language for a government. truly hope this helps.