Mpemba Kasi

Mpemba Kasi is the traditional name of a large Bantu kingdom which was the northernmost territory of the confederation Mpemba, and to the south of the Mbata Kingdom. It merged with that state to form the Kingdom of Kongo around 1375 AD.[http://www.rightforeducation.org/all-topics/culture/kongo-kingdom/ A Short History of the Kingdom of Kongo] In Kongo traditions it is considered the "Mother of Kongo".{{Citation |title=The Development of States in West Central Africa to 1540 |date=2020 |work=A History of West Central Africa to 1850 |pages=16–55 |editor-last=Thornton |editor-first=John K. |url=https://www.cambridge.org/core/books/abs/history-of-west-central-africa-to-1850/development-of-states-in-west-central-africa-to-1540/CE71122CF8DFD7B4B188BA34F8F65BFC |access-date=2024-09-21 |series=New Approaches to African History |place=Cambridge |publisher=Cambridge University Press |isbn=978-1-107-56593-7}}{{Rp|pages=24-25}}

Kasi is described as a very large territory, but not as powerful. Its last ruler, according to oral tradition, was named Nimi a Nzima.[http://www.historyfiles.co.uk/KingListsAfrica/AfricaAngola.htm History Files: Kongo Kingdom]