1. ancient societies like the mayans
a: only united when they were about to be conquered by enemies
b: never developed the ability to create accurate calendars
c: had a social structure similar to egypt’s pyramid structure
d: were concerned with religious duties more than daily activities

C. Had a social structure similar to Egypt's pyramidal structure.

Explanation:

In the Egyptian social structure, the servants and slaves were at the bottom, The Pharaoh and the priests were at the top. Egyptians even raised some human beings to gods, Pharaoh was also thought to be a god in human form and exercised total control over their people. Both Mayans and Egyptians had a pyramidal social structure.

the adoption by russian princes of the mongols' diplomatic rituals