Greece and Rome
the Romans contributed to there system of laws they would carve them into twelve tablets and hang them up and they applied to all roman citizens but for this current day it contributes to the current laws and codes in Europe to this day they also contributed to Christianity they declared it the official religion and to this day Christianity is a major religion.
Greece wasn't one independent country it was divided into city states with each city having its own government. They would also refer to there city state they wouldn't say i am from Greece they would say i am from Sparta or the Athens. Also they had two types of governments oligarchy and monarchy and each city state would have either or