Replace fossil-fuel products and oil derivatives with hemp. Fuels, plastics, building materials, can be all made from hemp. "Hempcrete" is 6x lighter than steel, while being 10x stronger. We can build recycle-able houses out of hemp. Ford built a car partially out of hemp, and it could take hits from an axe to the body without leaving a dent (sure, now we know crumple zones are important, but the material can absorb more force, which would make for better crumple zones). There are tens of thousands of products and materials we can make out of hemp, but we don't because hemp was a threat to paper (and oil) corporations in the US in the 1920s and 1930s.
But how did the US force the world to make hemp illegal? 🤔 Was it in post-WWII reconstruction and Marshall Plan?