The continent of Africa is one of the regions most rife with contemporary slavery. Slavery in Africa has a long history, within Africa since before historical records, but intensifying with the trans-Saharan and Indian Ocean slave trade and again with the trans-Atlantic and Barbary slave trade; the demand for slaves created an entire series of kingdoms which existed in a state of perpetual warfare in order to generate the prisoners of war necessary for the lucrative export of slaves. These patterns persisted into the colonial period during the late 19th and early 20th century. Although the colonial authorities attempted to suppress slavery around 1900, their attempts were largely ineffective. Even after decolonization, slavery continues in many parts of Africa despite being officially illegal.
Slavery in the Sahel region (and to a lesser extent the Horn of Africa) exists along the racial and cultural boundary of Arabized Berbers in the north and darker Africans in the south. Slavery in the Sahel states of Mauritania, Mali, Niger, Chad and Sudan in particular, continues a centuries-old pattern of hereditary servitude. Other forms of traditional slavery exist in parts of Ghana, Benin, Togo and Nigeria. There are other, non-traditional forms of slavery in Africa today, mostly involving human trafficking and the enslavement of child soldiers and child labourers, e.g. human trafficking in Angola, and human trafficking of children from Togo, Benin and Nigeria to Gabon and Cameroon.