What was one reason for genghis khan’s success as a military leader? a. he ruthlessly destroyed all mongol clans except his own. b. he organized the mongolian army into an efficient fighting force. c. he built goodwill by treating conquered peoples with mercy. d. he divided his empire into four military districts called khanates.

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. This inspired great loyalty to Genghis Khan making him stronger with each military victory.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.