That Answer is Incorrect. The correct answers are:
Nations must cooperate to bring about and maintain world peace.
Nations must not wage wars or commit war crimes in a desire to control other nations.
He wanted to make sure the men that sacrificed their lives for a cause, and that cause be a just one. He wanted to preserve the union at all cost, as well as give all men equality and liberties that they deserved. That was the cause he found necessary, and the cause our men rallied behind.
Thats what I think at least,
Hope it helps.
John Hope came from an interracial marriage.
The correct answer is b.
Neo-Confucianism emphasized self-discipline, filial piety, and obedience to the ruler which paralleled the Ming and Qing emperors' goal of maintaining a stable empire.