At the Hague, Netherlands, emissaries from the Empire of China, the Republic of France, the Empire of Germany, the Kingdom of Italy, the Empire of Japan, the Kingdom of the Netherlands, the Kingdom of Persia (Iran), the Republic of Portugal, the Empire of Russia, the Kingdom of Siam (Thailand), the United Kingdom, and the United States, sign the International Opium Convention of 1912: the first international treaty to restrict recreational drug use.
[added 6/5/2022]
Subsequent Events:
Authority:
“Law of the Jungle”
ccc-2point0.com/preface
References:
Marihuana Tax Act of 1937 – Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Marijuana_Tax_Act
International Opium Convention – Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/International_Opium_Convention