Berber languages suggests that the C-Group population — which, along with the Kerma culture, inhabited the Nile valley immediately before the arrival of the first Nubian speakers — spoke Afro-Asiatic languages. Roger Blench (2018) suggests that Proto-Berber speakers had spread from the Nile River valley to North Africa 4,000-5,000 years ago due to the spread of pastoralism, and 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 A.D. Blench
Ethnic cleansing is intended to destroy a population. Some academics consider genocide as a subset of "murderous ethnic cleansing". Thus, these concepts are different, but related, as Norman Naimark writes: "literally and figuratively, ethnic cleansing bleeds into genocide, as mass murder is committed in order to rid the land of a people". William Schabas adds, "Ethnic cleansing is also a warning sign of genocide to come. Genocide is the last resort of the frustrated ethnic cleanser." In 1946 Königsberg was renamed Kaliningrad. The survivors of the German population were forcibly expelled and the city was repopulated with Soviet citizens. In the 1990s