Fig. 4: Regional outsourcing map of the USA for 2000 and 2018 for the energy proxy.
From: Polarizing and equalizing trends in international trade and Sustainable Development Goals

a, Year 2000. b, Year 2018. Arrows connect top trade partners with the USA, showing the change in pattern of international trade in terms of country of origin over time, with a focus on energy use embodied in the trade of goods and services. The thickness of the arrow represents the intensity of the flow.