Https://upload.wikimedia.org/wikipedia/commons/a/aa/Pacific_Culture_Areas.pngBut maps generated during the 16th to 18th generations tended to vary in how to carry on the boundary further than the Don bend at Kalach-na-Donu (where it truly is closest towards the Volga, now joined with it through the Volga–Don Canal), into territory not explained in almost any detail https://davidz813zrk6.thelateblog.com/profile