The meaning of the term chivalry is a<span> code of conduct the required knights to be brave, loyal, and true to their word</span>
I'm not 100% sure but it could be: Voluntary Exchange takes place between buyers and sellers:
(btw I copied and pasted from the question so I didn't take any content :D)
Answer:
they focused on and promoted a national identity : They enforced ideas about the inferiority of some races
