World History- Mongols

According to historical record this group of ruthless, skilled, and terrorizing people changed the perception of peoples thinking about Asia for many years. Also, the Mongols were able to unite the two continents in regards to trading and promoting the exchange of cultural ideologies. 

1. Why were the Mongols such a feared fighting force? __________________________________________________________________________________________________________________
2. Have you ever heard of Genghis Khan before watching this video? What are your thoughts of him? __________________________________________________________________________________________________________________