Us history historians knowledge of the earliest Americans is limited because

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.

some women in the middle and upper classes worked as doctors, government officials, or priestesses. both women and men enjoyed a better quality of life the higher they were on the social pyramid. the egyptians believed that their class system created a stable, well-ordered society. each group had its own role to play.