What was one reason for genghis khan success as a millitary leader

One reason for Genghis Khan's success as a military leader was him building goodwill by treating conquered peoples with mercy. Khan was known for taking the conquered tribe under his protection and allowing the members into his own family. His mother often adopted the conquered tribe's orphans.

explanation:

kill anyone that got in the way

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;