In the long term, the Mongol-enforced movement of conquered peoples from their homelands to distant parts of the empire facilitated the exchange of ideas and techniques, as exemplified by the flow of Chinese technology and artistic conventions westward to the Middle East and Europe
The answer is C. Forced him to sign the magna carta.
This was a document that regulated the king, so that john and any king that came before him would not abuse their power.
Hope this helps!
Thaht is A because that is unnecessary
