OK well doesnt make slot of sense by what you mean
I think it’s the b because they had feudalism in that period during the fifth century when kingdom s begin to become units of government
the formula for water is H2O. the H is hydrogen and the O is oxygen.
The Oldest Living Civilization. An old missionary student of China once remarked that Chinese history is “remote, monotonous, obscure, and-worst of all-there is too much of it.” China has the longest continuous history of any country in the world—3,500 years of written history.