"Which word or phrase describes the native people of Mongolia in the 12th century?"
Well... we could do process of elimination
It can't be "hunter-gatherers" because they are the members of the nomadic people that who live "chiefly" but by hunting or fishing for certain foods (like wild foods
It can't be farms because it just doesn't have to do with this portion
It CAN BE nomadic herdsmen they are basically people who were part of the tribe a particular group that constantly moved from each place to place with/without a indefinite house
It can't be city-dwellers because they were people who lived in the cities
Though when they started continuing their abuse of power, and continue on the power hungry ideal. They ended up getting revoked of power and just well, they just got abolished.