Ancient History Documentary (2000 BC) (14.36 minutes) This video says that the Sintashta culture are the result of an eastwards migration from the Corded Ware culture after 2400 BC, and in the Ural foothills they discovered copper ore. Youtube video The Origins of Mounted Warfare | Ancient History Documentary (33.33 minutes) This video says that (starting at time 5.00) after 2200BC the Sintashta culture developed a breed of horses that by 1500BC to 1000BC came to replace all other domesticated horses in the world, and that genetic analysis of those horses' recovered DNA showed that the changes were better temperament and better tolerance to stress and better endurance and better weight-bearing abilities. chariots reached China by 1200 BC. As the Iron Age came, improvements in horse-riding technology gradually superseded chariots in war and limited them to ceremonial use. The usual means of steering the horses was with large round cheekpieces with projections that pressed into the horses' cheeks and forced a fast response to rein pulls that called for a fast turn. (at time 17.42) In the 17th and 16th centuries BC along the middle Danube, less painful cheekpieces made from lengths of deer antler started to be used, and some say that this shows that by `600BC in eastern Hungary and western Romania there were horse-riding warriors. (at time 20/00) Around 1000 BC in the Pontic-Caspian steppe modern-type bridles with bits appear, and their spread coincides with mass abandonment of towns and villages on the steppe. Bibliography Archaeological sites in Russia Former populated places in Russia History of Ural Andronovo culture Indo-Iranian archaeological sites Archaeological type sites Objects of cultural heritage of Russia of federal significance Cultural heritage monuments in Chelyabinsk Oblast