Sagot :
In all of the Greek city-states, their military training, philosophy, and music differed. However, the alphabet remained the same throughout all of the city-states, it was a universal alphabet.
Answer:
a) The alphabet
Explanation:
In 403 BCE, Athens stepped up with regards to bringing together the numerous renditions of the alphabet in order, and one of the eastern adaptations of the Greek letter set was embraced as the official one.
This official form replaced every single other form in Greece, and it ended up being predominant.