From his eastern origin Apollo brought the art of inspection of "symbols and omina" (σημεία και τέρατα : semeia kai terata), and of the observation of the omens of the days. The inspiration oracular-cult was probably introduced from Anatolia. The ritualism belonged to Apollo from the beginning. The Greeks created the legalism, the supervision of the orders of the gods, and the demand for moderation and harmony. Apollo became the god of shining youth, the protector of music, spiritual-life, moderation and perceptible order. The improvement of the old Anatolian god, and his elevation to an intellectual sphere, may be considered an achievement of the Greek people.
Which group created the legalism, the supervision of the orders of the gods, and the demand for moderation and harmony?
The Greeks