上游充通大兽 SHANGHAI JIAO TONG UNIVERSITY Significance greatest political innovation of the ancient Greeks. This form of social and political organization based on the concept of citizenship guaranteed a shared identity,rights,and responsibilities to a city-state's free men and women. PortalSignificance greatest political innovation of the ancient Greeks. This form of social and political organization based on the concept of citizenship guaranteed a shared identity, rights, and responsibilities to a city-state’s free men and women. Portal