~300,000 BCE - 1920 CE: Humans freely use psychoactive substances for most of their existence.
1920: Prohibition Era begins (U.S.)
1925: International Opium Convention
1930: Forming of the Federal Bureau of Narcotics (FBN) is formed (U.S.)
1937: Marihuana Tax Act (U.S.)
1948: The World Health Organization (WHO) establishes a technical committee on drug dependence, affecting governments on drug policies.
1951: Boggs Act (U.S.)
1961: The UN Single Convention on Narcotic Drugs
1971: Terrorist Richard Nixon Declares the War on Drugs
1972: The UN Commission on Narcotic Drugs (CND)
1973: The Controlled Substances Act (U.S.)
1984: The Comprehensive Crime Control Act (U.S.)
1986: Anti-Drug Abuse Act (U.S.)
1988: United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances (1988)
1997: The UNODC was established, merging the United Nations Drug Control Programme (UNDCP) and the Centre for International Crime Prevention (CICP)
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