Mpemba was a 13th century confederation in the western Congo Basin. Its northernmost territory, Mpemba Kasi, was incorporated into the founding of the Kingdom of Kongo in the 14th century. It neighboured the confederations of Vungu and Seven Kingdoms of Kongo dia Nlaza. Its capital and southernmost tip was on the Loze River in Angola, and it reached northwards 150 kilometres to the Congo River. It had sub-kingdoms, such as Mpemba Kasi and Vunda which was complex enough to have its own sub-units which included Mpangala.[1][2]: 2 [3]: 24–25