In in spite of their differences what did the greek city-states share?

Despite their differences, the Greek city-states shared a common language, religious beliefs, and cultural practices, which helped to create a sense of unity among them. They worshipped the same pantheon of gods, participated in shared festivals like the Olympic Games, and valued similar ideals such as democracy and philosophy. Additionally, their trade and military alliances fostered connections that transcended regional boundaries. This shared identity, despite their competition and rivalries, laid the foundation for a distinctive Greek culture.