Pick a product with which you are very familiar with or take the time to go through your clothes closet and try and find a product made in the USA, or one that you can anticipate being able to research easily.
Map the supply chain of your product as far back as is feasible. A simple example is a diamond sold by a local jewelry store, purchased direct from diamond wholesalers in the Netherlands, bought by wholesalers from diamond centers in South Africa, and brought out of mines owned by a company in South Africa. Identify as many participants in the channel as possible by company name and location. Identify the mode of transportation used between each stage in the channel. Identify by name and location the component parts of the product if any.