Elements and Importance of Case Briefs/Preamble, law homework help

Please list and describe the elements of a case brief, and explain why case briefs are an important part of legal research and writing.

Why are court opinions important?

a.What is the Preamble?

b.Why is it important?

c.What role or function does it play as part of the Consitition?

d.Imagine you were recruited to rewrite the Preamble to fit the needs of our country today. What functions would you include in your new Preamble?