other signatories moved a little slowly, but still, england, france and netherlands all had passed similar prohibition laws by the end of world war one, although only effective, the metropole colonies. they still had legal and profitable for the european countries. the opium prohibition was extended the rest of the world because any countries signing the treaty of paris ending world war one also automatically signed the opium convention. so this became the most at the most basic level international law. by 1919, the league of nations contained an opium advisory committee tasked with implementing this prohibitionist stance. u.s. representatives who of course, represented themselves not the u.s. government, played powerful roles on this committee throughout, the interwar years, and pushed the choice of prohibition at the internation final level. u.s. leadership promoting a prohibitionist source control approach continued world war two. harry anslinger, who was the notorious head, the federal bureau of narcotics, promoted the 1953 opium protocol in the united nations against wishes of pretty