The nineteenth century records show that "Andevo" or slaves were imported black Africans, and they constituted about a third of the Merina society. The Merina society sold highland slaves to both Muslim and European slave traders on Madagascar coast, as well as bought East African and Mozambique-sourced slaves from them for their own plantations between 1795 and 1895. Marriage and any sexual relations between the upper strata "fotsy" and the lower strata "mainty" were a taboo. According to a 2012 report by Gulnara Shahinian – the United Nation's Special Rapporteur on contemporary forms of slavery, the descendants of former slave castes continue to suffer in contemporary Madagascar Merina society, and inter-caste marriages continue to be socially ostracized.