It is based on public ownership and operation of the means of production vested in publicity or workers who operate enterprise
The Ancient Greek civilization is so well known because of how much it impacts society today. They were the first ones to set the stage to many key things still used today like philosophy, literature, astronomy, mathematics, and medicine. Not only does it impact us it also affected other great civilizations like the Roman Empire. They overall are the root of who we are as a society today especially in the education aspect.
The last straw that ended the Roman Empire for good were Barbarian groups attacking them and their land.
