It mainly explained the difference between the concepts of nobility in Western Europe , on one hand .
The Danubian Principalities , on the other : Moldo - Wallachian nobility had no concept of knighthood , as all boyars were defined by their demesnes .
It mainly explained the difference between the concepts of nobility in Western Europe , on one hand , and the Danubian Principalities , on the other : Moldo - Wallachian nobility had no concept of knighthood , as all boyars were defined by their demesnes .