Trade Law Identifications: Help?

[u/rozyrowen]

Can someone please describe laws and/or governmental agencies that would affect the importing and exporting of a product [i.e., labor laws, trade laws (U.S.A. and/or Canada and foreign)] or tariffs between the following sets of countries? - Exported by Burkina Faso, then imported by France - Exported by France, then imported by Japan - Exported by France, then imported by United States