Question: How useful to historians looking for evidence of social structure in the ancient river valley civilizations would the excerpts from the early law
codes?

Very useful for the historians.

Explanation:

It is very useful to historians looking for the evidence of social structure in  the ancient river valley civilizations because in these ancient river valley civilizations, there are a lot of evidences present about the social structure of the people living in ancient times. For evaluating the social structure of ancient river valley civilizations, the historians have to find out the evidences from the valley where the civilization lives.

2 is armenia i think

the correct statement is letter a.   according to the mandate of heaven, kings were considered godlike beings, so they could do as they .

the mandate of heaven is a chinese political and religious ideology used since ancient times to justify the rule of the king or emperor of china, that has been in place since the zhou until the dynasty system ended. it has been created to justify the zhou as the main power of the region. in order to keep harmony, the ruler has to make what he wants and what people want. he had to make good choices to satisfy the people and then they will be happy and keep you in power.