Greek mythology was based on a ____.

Greek mythology was based on a polytheistic belief system.

Greek mythology was based on a collection of ancient myths and legends.

Greek mythology was based on a collection of ancient stories and beliefs that formed the religion of the ancient Greeks. To find out more about Greek mythology, one can start by researching ancient Greek literature such as the Homeric epics (the Iliad and the Odyssey), works of Greek playwrights like Aeschylus, Sophocles, and Euripides, or studying the surviving hymns, fables, and genealogies. These sources provide valuable insights into the gods, goddesses, heroes, and creatures that make up Greek mythology. Additionally, examining archaeological artifacts, sculptures, and ancient Greek artwork can help to further understand the religious and cultural significance of Greek mythology.