If there is a need for the free citizen to be equal and free then how polis can be governed?

A polis is Greek city state. There not all people were free. Only certain males who were born there. Like Athens. No one was always equal. But each had the same amount of power when voting. That is one of the basic ideals about democracy.

Explanation:

Hope I understood the question and that this is the answer

the us constitution is a living document, meaning that it can be changed over time as the country changes.