The Governor-General's Opium Control Decree (조선아편취체령, Imperial Ordinance No. 15) took effect on 15 June 1919, licensing poppy growing and bringing the sale of opium under official control. It was part of the colonial monopoly system rather than a cannabis law: the narcotics decree that followed in 1935 listed morphine and cocaine, while hemp remained a fibre and seed crop. The 1919 rules became one of the foundations of the drug-control system that later covered cannabis.[1][2]
Listed for context. No score change is recorded for South Korea here.
References
- 국가법령정보센터 — 조선아편취체령 (조선총독부제령 제15호, 1919. 6. 11., 시행 1919. 6. 15.)연혁 목록의 1919년 제정본
- 한국민족문화대백과사전 — 마약법변천사항: 1919년 조선아편취체령, 1935년 조선마약취체령archived
Checked. The date and the event were compared with a source that was read.