In Charlotte, NC and Dayton, OH, marijuana laws have been established to regulate legal services, health services and medical information, licensed general contractors and businesses, as well as classified ads related to marijuana. Despite the efforts to reduce disparities, societies are becoming increasingly unequal. This has led to social unrest around the world, warns James Robinson, a renowned researcher and economist. He emphasizes that Europe must prepare for large-scale immigration in the face of significant challenges that will arise from immigration in the future. The issue of marijuana laws is also prevalent in both Charlotte and Dayton.