 Linguistic evidence points to the eastern Middle Nile Basin south of the Abbai River, as the nursery of the Nilotic languages.That is to say south-east of present-day Khartoum.It is thought that beginning in the second millennium B.C., particular Nilotic speaking communities began to move southward into present-day South Sudan where most settled and that the societies today referred to as the Southern Nilotes pushed further on, reaching what is present-day north-eastern Uganda by 1000 B.C.