Https://upload.wikimedia.org/wikipedia/commons/a/aa/Pacific_Culture_Areas.pngBut maps produced throughout the 16th to 18th generations tended to differ in how to carry on the boundary past the Don bend at Kalach-na-Donu (wherever it can be closest for the Volga, now joined with it by the Volga–Don Canal), into territory not explained in any detail by the http://Cloverjuice.com