Who was at the top (or near the top) of the social pyramid in many ancient societies, because they were considered

so important?

The king would usually be at the top of the social pyramid. The king was also known as the pharaoh in Egypt.

Explanation: Kings were considered the highest class on the social pyramid in many ancient societies. In Egypt, the king would be known as the pharaoh.

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the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain