 The stone implements from the Jalelo site in the north were also characterized in 1909 as important artefacts demonstrating the archaeological universality during the Paleolithic between the East and the West.According to linguists, the first Afro-Asiatic-speaking populations arrived in the region during the ensuing Neolithic period from the family's proposed urheimat ("original homeland") in the Nile Valley, or the Near East.Other scholars propose that the Afro-Asiatic family developed in situ in the Horn, with its speakers subsequently dispersing from there.