1) The document discusses the languages of Africa during the Middle Ages, focusing on the Bantu migration. There were four main language groups, with Congo-Kordofanian (Bantu) being the most common. 2) Proto-Bantu originated in eastern Nigeria/Cameroon and spread as Bantu-speaking villages grew crowded and people migrated in search of land, a movement called the Bantu Migration. This began around 1000 BC and spread the Bantu language. 3) The Bantu Migration had both positive and negative effects, most notably spreading Bantu languages across central and southern Africa but also causing depopulation and loss of some cultures in the original