Original sentence: Is used to describe someone who is below the average in mental capacity, for example rodhullandemu in Europe for ruthless expansionism and massacre of enemy populations under the Mongol Empire, lending a negative connotation to the word
Edited sentence: The term comes from the Mongol people of East Asia, who had a reputation in Europe for ruthless expansionism and massacre of enemy populations under the Mongol Empire, lending a negative connotation to the word