Pedzisa mutsara unotevera: Kunyange zvazvo pasina chinyorwa chinoratidza kuti guta reKozmodemyansk rakambovako, zvinoita sokuti rakambovako kare rakagadzirwa nematanda rainzi Mari iro raidzora panosangana nzizi dzeVolga neVetluga. Yaivawo nzvimbo inokosha yokuzororera uye yokutengesera yevatengesi vokuchamhembe vaifamba nomurwizi vachienda kuVolga Bulgaria. Nhamba
Kupinda kwevaMongol muVolga Bulgaria kwakanga kuri kurova kukuru munharaunda yacho.