• For the Ancient Greeks the city was center and object of all political activity;
• the government of the Ancient Rome met many models over the centuries, from monarchy to republic, from democracy to totalitarianism. However the Romans laid the fundaments of modern states, essentially based on rules and Law preminence. Someone perhaps remembers the lessons of Roman Right at the University, the ease of culture propagation, and the expansion of Christianity propitiated by the ability to move in the Romanized world.
• after the Roman Empire fall under the pressure of barbarians from the east, the Middle Ages did begin;
• In the Middle Ages formally all political activity was based on relationships that mankind must keep with the order given by God;.
• from the Renaissance, or 'the rebirth of civilization', an approach fundamentally anthropocentric has been adopted;
• in modern and contemporary world many models were born, from totalitarianism to participatory democracy, with its many variations.

Charles Blattberg, defined it as the "answer to conflicts through dialogue" and suggests that political philosophies offer philosophical considerations about it. See "Political Philosophies and Political Ideologies in Patriotic Elaborations: Essays in Practical Philosophy", Montreal & Kingston: McGill-Queen's University Press, 2009.

Note to the reader,
I recently changed my password with a stronger one after experiencing changes in what I had written. The 'th' were deleted from the text and the html code, so width became 'width', the arthicle became 'e' and so on. Many sentences have been changed by introducing pleonasms and grammatical errors. I've found this all along mysite so I'm reviewing everything and I do not have time to add new things. Excuse me please