I watched a programme on History Channel claiming marijuana and opium as medicines from ancient times. I collected more information about it and found that in many countries these substances were used as medicines for thousands of years and still they are in use. But America banned it because they didn't know it's medical use and thought these are narcotic substances. However they allowed the use of Wine,Beer and Alcohol simply because western civilizations drink wine, beer and alcohol. America also forced other countries to ban marijuana and opium by making changes in International Laws. However they were never successful in that and now in many US States use of marijuana is allowed to a limited extent. Police allow you to have certain quantity (50 or 20 grams) and you can't be convicted for that. However production, distribution or trafficking of marijuana is illegal. The programme said that sooner or later the Federal Government will lift a ban on marijuana. In Netherlands anyone above 18 years of age can go to a Coffee shop and have a limited quantity of marijuana. It in fact reduced illegal drug trafficking and crimes related to that. It also saved time, money and energy wasted otherwise by Police and Courts on stopping the use of marijuana. In Jamaica though legally there is a ban on marijuana people consume it openly. In fact it is in their culture. 50 years ago it was common to consume opium as a sleep medicine all over the world. There were opium fields in India and China. And in Afghanistan there are opium and marijuana fields even today. One of the British Viceroy to India died because of an overdose of opium.