Not sure but this is just off the top of my head.
They did it because of there religion, for a god or good luck
China is another superpower along side with the US.
the border was different in the Han' Dynasty because more goods and people were opening up to the world during a great time.
the great wall of china was also I border for war and protection.
this was build and secured during the Ming' Dynasty.
Answer:
I believe C
Explanation:
Knights were the king's army of warriors.
