Bantu is Africa’s largest language family in terms of language and speaker numbers as well as geographic distribution. It belongs to the Benue-Congo branch of Niger-Congo, the world’s largest language phylum. My longstanding research program pertains to synchronic and diachronic study of Bantu languages and the interdisciplinary study of the ancient history of their ancestral speech communities in Central, Eastern and Southern Africa. Delving into the history of Bantu languages and their speakers is inquiring into significant episodes of Africa’s past. The history of Bantu as a distinct language family is assumed to have begun some 5,000 to 4,000 years ago when Bantu speakers started to migrate southwards from their putative homeland in the current-day borderland of southern Cameroon and Nigeria. The so-called "Bantu Expansion" is the most important population event of Late Holocene Africa, which revolutionized Africa’s linguistic, cultural, and biological landscapes.