The government should respect the rights of its citizens.
Laws are no longer strictly enforced.
Polytheism (the belief in more than one god.)
The only option that is not generally a reason why historians study societal change would be "<span>d. to estimate how long it would take to build a road system," since this requires a separate type of research. </span>
Labor unions fought for reasonable working hours, safe working environment, and, better wages. Child labor was also stopped at that time and improved health benefits for injured or retired workers.
