What are the main historical sources of the democratic tradition

a political unit made up of a city and the surrounding lands

Speaking of democratic tradition. Source can be one on: The Roman Empire which they practiced human right and election of the representatives in their republic. They had freed men and women given rights to vote and partake in election. Though males are the only ones allowed to run an office or in the military. Women were given the opportunity to vote and participate. Democracy was part of how the Romans run their government and court dealings. We can also refer to their court as where Romans stage for legal action and such matters.