250. The Supplementary Convention on the Abolition of Slavery of 1956, 368 expanded the definition of slavery by including “institutions and practices similar to slavery” such as debt bondage and serfdom, among others, within the absolute prohibition of slavery.369 251. In the sphere of international human rights law, Article 4 of the 1948 Universal Declaration of Human Rights establishes that “[n]o one shall be held in slavery or servitude” and that “slavery and the slave trade shall be prohibited in all their forms.”370 Article 8(1) and 8(2) of the 1966 International Covenant on Civil and Political Rights stipulates that: “[n]o one shall be held in slavery,” that “slavery and the slave-trade in all their forms shall be prohibited,” and that “[n]o one shall be held in servitude.”371 252. At the regional level, Article 4 of the 1950 European Convention on Human Rights establishes the prohibition of slavery, servitude and forced labor in general.372 Meanwhile, the 1981 African Charter on Human and Peoples’ Rights prohibits slavery together with other forms of exploitation and degradation of man, such as the slave trade, torture, cruel, inhuman or degrading punishment and treatment .373 Supplementary Convention on the Abolition of Slavery, the Slave Trade and Institutions and Practices Similar to Slavery, Article 1: Each of the States Parties to this Convention shall take all practicable and necessary legislative and other measures to bring about progressively and as soon as possible the complete abolition or abandonment of the following institutions and practices, where they still exist and whether or not they are covered by the definition of slavery contained in article 1 of the Slavery Convention signed at Geneva on 25 September 1926: 368 (a) Debt bondage, that is to say, the status or condition arising from a pledge by a debtor of his personal services or of those of a person under his control as security for a debt, if the value of those services as reasonably assessed is not applied towards the liquidation of the debt or the length and nature of those services are not respectively limited and defined; (b) Serfdom, that is to say, the condition or status of a tenant who is by law, custom or agreement bound to live and labour on land belonging to another person and to render some determinate service to such other person, whether for reward or not, and is not free to change his status; (c) Any institution or practice whereby: (i) A woman, without the right to refuse, is promised or given in marriage on payment of a consideration in money or in kind to her parents, guardian, family or any other person or group; or (ii) The husband of a woman, his family, or his clan, has the right to transfer her to another person for value received or otherwise; or (iii) A woman on the death of her husband is liable to be inherited by another person; (d) Any institution or practice whereby a child or young person under the age of 18 years, is delivered by either or both of his natural parents or by his guardian to another person, whether for reward or not, with a view to the exploitation of the child or young person or of his labour. Supplementary Convention on the Abolition of Slavery, the Slave Trade and Institutions and Practices Similar to Slavery, Article 7: “For the purposes of the present Convention: (a) "Slavery" means, as defined in the Slavery Convention of 1926, the status or condition of a person over whom any or all of the powers attaching to the right of ownership are exercised, and "slave" means a person in such condition or status; (b) "A person of servile status" means a person in the condition or status resulting from any of the institutions or practices mentioned in article 1 of this Convention; (c) "Slave trade" means and includes all acts involved in the capture, acquisition or disposal of a person with intent to reduce him to slavery; all acts involved in the acquisition of a slave with a view to selling or exchanging him; all acts of disposal by sale or exchange of a person acquired with a view to being sold or exchanged; and, in general, every act of trade or transport in slaves by whatever means of conveyance.” 369 Universal Declaration of Human Rights, Article 4: “No one shall be held in slavery or servitude; slavery and the slave trade shall be prohibited in all their forms.” 370 International Covenant on Civil and Political Rights, Article 8: “1. No one shall be held in slavery; slavery and the slave-trade in all their forms shall be prohibited. 2. No one shall be held in servitude. 3. a) No one shall be required to perform forced or compulsory labour. […]” 371 European Convention on Human Rights, Article 4: “Prohibition of slavery and forced labor. 1. No one shall be held in slavery or servitude. 2. No one shall be required to perform forced or compulsory labour.” 372 African Charter on Human and Peoples’ Rights, Article 5: “Every individual shall have the right to the respect of the dignity inherent in a human being and to the recognition of his legal status. All forms of exploitation and degradation of man particularly slavery, slave trade, torture, cruel, inhuman or degrading punishment and treatment shall be prohibited.” 373 65