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International Opium Convention expanded

1919-1922 The International Opium Convention is incorporated into the Treaty of Versailles and registered in the League of Nations. As a result, nearly 60 countries have effectively ratified this Treaty.

1919-1922

The International Opium Convention is incorporated into the Treaty of Versailles and registered in the League of Nations. As a result, nearly 60 countries have effectively ratified this Treaty.

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