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
History of West Africa CE, and later by the Songhai and Sokoto Caliphate. There were also a number of forest empires and states in this time period. Following the collapse of the Songhai Empire, a number of smaller states arose across West Africa, including the Bambara Empire of Ségou, the lesser Bambara kingdom of Kaarta, the Fula/Malinké kingdom of Khasso (in present-day Mali's Kayes Region), and the Kénédougou Empire of Sikasso. European traders first became a force in the region in the 15th century. The transatlantic African slave trade resumed, with the Portuguese taking hundreds of captives back to their country for use as