Book of historian, linguist, doctor of philological sciences, academician V.E. Kvarchia is a multifaceted study of the history of ethnogenesis of the Abkhaz-Abaza ethnic world from ancient times to the end of the XIII century. AD The author's work is based on materials from similar studies of scientists from Abkhazia and other countries, as well as on ancient, ancient and medieval written sources; historical, ethnographic, folklore materials are widely attracted, and in particular a variety of material from both Abkhaz-Abaz and other languages. A comprehensive study of the problem allowed the author to give fundamentally new assessments not only of the historical past of the Abkhaz and Abazins, but also, to a certain extent, of certain periods of the history of a number of peoples of the Caucasus.