Describe the lawsuit brought against Led Zeppelin. Do you think rock and roll artists can borrow music from others?

Please write a 300-word essay answering the following questions:

Describe the lawsuit brought against Led Zeppelin.
Do you think rock and roll artists can borrow music from others?
Do you think they intentionally copied Stairway to Heaven?
Do you think this is any different than cover versions of a song?
Do you think Spirit deserves financial compensation?
Do you agree/disagree with the verdict of this case? Why?