research

Select a model of a photovoltaic (PV) solar panel.  Any brand and model will do, as long as it is sold in the US and is rated at least 100 Watts (W).

Then, research from which countries do components come—ALL components: cells, raw materials (silicon, labor, plastic, glass, metal), electronic components (if any), even capital if you can! Do not forget to list your sources of information.