A. The Zhou Dynasty’s justification for its leadership.
Explanation:
The mandate of Heaven was something invented by The Zhou Dinasty to justify them overthrowing the Shang Dinasty, under the saying that they were sent by heaven and that there could only be one true ruler of China, and it is used ever since to justify the mandate of the ruler or emperor at the time ever since, saying that the ruler or emperor had the blessing of the Gods.
it talks about what you where judged by in the war and if you do research you can see that slaves where forced to fight in the war but hope this helped ;)
I personally think the Koryo kingdom was the best because it influenced Korean culture. An example of this is Anguksa, a buddhist temple that showed Koreans appreciation for buddhist temples.
