How were the economies of ancient mesopotamia, egypt, and the indus valley similar?

   All these economies rested on agriculture thanks to the fertile plains around the river valleys

Explanation:  Ancient Mesopotamia grew up in the valley of the Tigris and Euphrates rivers, India along the Indus River and Egypt in the Nile Valley. This means that on the basis of rich agricultural yields, they could gradually develop, enrich over the time and use the same rivers to transport goods and exchange goods, which was a precondition for progressing to the size of civilizations as we know them from history.

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.