Portuguese language in Africa as a second language, in countries like Angola and Mozambique, where Portuguese is an official language, but also in countries like South Africa and Senegal, thanks to migrants coming from Portuguese speaking countries. Some statistics claim that there are over 30 million Portuguese speakers in the continent. Like French and English, Portuguese has become a post-colonial language in Africa and one of the working languages of the African Union (AU) and the Southern African Development Community (SADC). Portuguese co-exists in Guinea-Bissau, Cape Verde, and São Tomé and Principe with Portuguese-based creoles (Upper Guinea and Gulf of Guinea Creoles), and in
South West Africa of Justice, which in 1950 ruled that South Africa was not obliged to convert South West Africa into a UN trust territory, but was still bound by the League of Nations Mandate with the United Nations General Assembly assuming the supervisory role. The ICJ also clarified that the General Assembly was empowered to receive petitions from the inhabitants of South West Africa and to call for reports from the mandatory nation, South Africa. The General Assembly constituted the Committee on South West Africa to perform the supervisory functions. In another Advisory Opinion issued in 1955, the Court further ruled that