Rubuta ci gaba don wannan sakin layi - A lokacin mutuwarsa a 1227, Genghis Khan ya raba Daular Mongol tsakanin 'ya'yansa maza hudu a matsayin appanages, amma Daular ta kasance da haɗin kai a ƙarƙashin babban khan. Jochi shi ne babba, amma ya mutu watanni shida kafin Genghis. Yankunan yamma da Mongols suka mamaye, waɗanda suka haɗa da kudancin Rasha da Kazakhstan na yau, an ba wa manyan 'ya'yan Jochi, Batu Khan, wanda daga baya ya zama sarkin Blue Horde, da Orda Khan, wanda ya zama shugaban White Horde. A shekara ta 1235, Batu tare da babban janar Subutai ya fara mamaye yamma, da farko ya ci Bashkirs sannan ya ci gaba
zuwa Volga Bulgaria a cikin 1236. Daga can ya ci nasara a kan wasu yankuna da ke kudancin Ukraine a yau a shekara ta 1237, ya tilasta wa 'yan Cumans da yawa su koma yamma. Yaƙin Mongol da Kypchaks da Cumans ya riga ya fara a ƙarƙashin Jochi da Subutai a 1216<unk>1218 lokacin da Merkits suka nemi mafaka a cikinsu. A shekara ta 1239, an kori yawancin mutanen Cuman daga yankin Crimea, kuma ya zama ɗaya daga cikin ƙasashen da ke ƙarƙashin Daular Mongol. Ragowar 'yan Cumans na Crimea sun tsira a cikin tsaunukan Crimea, kuma za su, a cikin lokaci, su haɗu da wasu ƙungiyoyi a cikin Crimea (ciki har da Helenawa, Goths, da Mongols) don samar da yawan Crimean Tatar. Motsawa zuwa arewa, Batu ya fara mamayewar Mongol na Rus' kuma ya kwashe shekaru uku yana mamaye masarautun tsohuwar Kievan Rus', yayin da 'yan uwansa Möngke, Kadan, da Güyük suka koma kudu zuwa Alania.