How Levi's Got Its Jeans into Wal-Mart. The questions are:

I need help answering three questions related to a case study:  How Levi's Got Its Jeans into Wal-Mart.  The questions are:

QUESTIONS

1. Outline the major problems that Levi's had in doing business with Wal-Mart.
2. Discuss all the changes that were done to the Supply Chain management strategy in order for Levi's to be able to meet Wal-Mart's requirements.
3. What are the major challenges of developing a modern Supply Chain management System?

Thank you.