Yes, it is true that linguists do not know for certain how language was developed by early humans, but they're able to determine that it started somewhere in Africa, due to human migration patterns.
Well, multiple answers are correct here. Confucian ideas indeed did represent C for example; family obligations are important.
Moreover, they also represented D and E.
D - the key to good behavior and good government is concern for others.
E - Laws are the basis of an orderly society.
A one-party system, since a dictator is usually one single person/group.