Rubuta ci gaba ga wannan sakin layi - A lokacin mamayewar Mongol na Kievan Rus '
, sun yi amfani da koguna masu daskararre a matsayin manyan hanyoyi, kuma hunturu, lokacin shekara-shekara wanda ba shi da iyaka ga kowane babban aiki saboda tsananin sanyi, ya zama lokacin da Mongols suka fi so ya kai hari.