A little history
At the end of last century with the expansion of trade and communications, drug use, which hitherto affected only small communities, began to spread. The passage of drugs from one country to another including the manner of his use, was still a growing problem. Since the consumption of these consequences brought not only the health of people but also affecting the development of communities.
Thus in 1909, thirteen nations of the world gathered in Shanghai and formed a committee, then in 1912 signed the first drug control treaty known as the International Opium Convention of The Hague. ”
Thereafter, a series of Conventions (1920, 1925, 1931, 1936) until in 1946 the Organization of the United Nations assumed responsibility, becoming the Commission on Narcotic Drugs, a body subordinate to it.
Shortly after the end of World War II were synthesized many compounds whose effects produced dependency. These substances were placed under international control.
The United Nations then writes “The 1961 Single Convention on Narcotic Drugs”, by which States Parties undertake specific obligations to limit drug production plant only the amount needed for medical and scientific purposes.
