Write a paper on the WalMart Supply Chain. You can email it to me when you are done. WalMart has one of the best supply chains in the world and it is one of the main reasons they are so successful.
You will need to do a little research to find out when and how it started, how does it work, what are the major elements, etc. Remember supply chain includes suppliers, logistics, customers, process, etc. Be careful not to get too detailed (for example, you don't have to name their many suppliers) so you can stick to the number of pages suggested.