Proto-Berber language reached the stage where these different branches of this language family evolved. From that perspective, Proto-Berber was the first Berber stage to depart from Proto-Afrosiatic in the eighth millennium. It was restructured several times during the almost 10,000 years that separated it from its modern shape, which has preserved few relics. Roger Blench (2018) suggests that Proto-Berber speakers experienced intense language leveling about 2,000 years ago as the Roman Empire was expanding in North Africa. Hence, although Berber had split off from Afroasiatic several thousand years ago, Proto-Berber itself can only be reconstructed to a period as late as 200
Proto-Berber language the use of a lingua franca which became Proto-Berber. Reconstructions of the ancient stages of this language are based on comparisons with other Afro-Asiatic languages in various stages and on the comparisons between the varieties of modern Berber languages or with Touareg, considered by some authors like Prasse to be the variety that best preserved proto-Berber. Some authors have criticised the reconstructed Proto-Berber phonological systems as being too close to those of modern Berber varieties because the common elements derived from the comparisons project modern phonology onto the Proto-Berber stage. Some earlier attempts to derive the phonemic inventory of Proto-Berber