This is far from an objective point of view and extremely misleading. Opium war in china had nothing to do with social cohesion, but trade and geopolitics. Sam

This is far from an objective point of view and extremely misleading. Opium war in china had nothing to do with social cohesion, but trade and geopolitics. Same for the war in Afghanistan. You don't need to go that far in order to come up with dubious examples (that few are familiar with) however. The early 1900s in the good old USA, where morphine and later heroin were sold over the counter should provide plenty of evidence that you're spewing garbage.