Whereas the signatories of the General Act of the Brussels Conference of 1889-90 declared that they were equally animated by the firm intention of putting an end to the traffic in African slaves, The Convention was amended by the Protocol done at the Headquarters of the United Nations, New York, on 7 December 1953 the amended Convention entered into force on 7 July 1955, the date on which the amendments, set forth in the annex to the Protocol of 7 December 1953, entered into force in accordance with article III of the Protocol. Entry into force: 9 March 1927, in accordance with article 12