What caused the Mongols to lose the bottle at Ain Jolut? They did not have their usual leader or their usual horses
They did not have their usual leader and the Momloks were better prepared
They used unsuccessful ambush tactics and did not have a leader
They used unsuccessful ambush tactics and underestimated the Mamluks

to extend a country’s power and influence

i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument.   historians are also  scientists that  have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.