Answer:
Literature and theater, which were very intertwined, were important in ancient Greek society. The Greek theater began in the sixth century BC in Athens with the performance of tragic plays at religious festivals. These, in turn, inspired the genre of Greek comedy.
These two types of Greek drama became very popular, and the performances spread throughout the Mediterranean and influenced the Hellenistic and Roman theatre. The works of playwrights such as Sophocles and Aristophanes established the framework upon which all modern theater is based.
While dialog may seem to have always been a part of literature, it was rare before the playwright named Aeschylus came up with the idea of characters interacting with dialogue. Other theatrical devices, such as irony, have been exemplified in works such as Oedipus the King of Sophocles.
In addition to text forms of theater and literature, oral traditions have been significant, particularly in early Greek history. It wasn't until about 670 BCE that Homer's epic poetry, The Iliad and Odyssey, were collected in text form.
Greek art, especially sculpture and architecture, also is extremely influential in other societies. From 800 to 300 B.C., Greek sculpture was inspired by Egyptian and Near Eastern monumental art, and over centuries it has transformed into a distinctively Greek vision of the art form.
Greek artists have achieved a pinnacle of perfection that captured human form in a manner never before seen and replicated.
Greek sculptors were especially concerned with the proportion, poise and idealized beauty of the human body; their figures in stone and bronze have become some of the most identifiable works of art ever created by any civilisation.
Greek architects have established some of the best and most distinctive buildings in the Ancient World, and some of their designs, including churches, theatres, and stadiums, have since ancient times been the key features of towns and cities.
Moreover, the Greek concern for simplicity, proportion, perspective and unity in their buildings would have a tremendous impact on the architects of the Roman world and would provide the basis for the classical architectural orders that would have dominated the western world from the Renaissance to the present day.
