Whakakihia te rerenga e whai ake nei: Ahakoa kāore i te whakapumautia i roto i tētahi tuhinga, i mua i te taone o Kozmodemyansk he pā rākau o Mari e whakahaere ana i te huihuinga o te Volga me te Vetluga Rivers. He waahi okiokinga me te hokohoko nui hoki mo nga kaihokohoko mai i te Raki i haere i te awa ki Volga Bulgaria. Ko te
Ko te whakaekenga a Mongol o Volga Bulgaria he wero nui ki te rohe.