Mycenean Greece in the context of "Midea (Argolid)"

The Greeks (Greek: Έλληνες) have been identified by many ethnonyms. The most common native ethnonym is Hellene (Ancient Greek: Ἕλλην), pl. Hellenes (Ἕλληνες); the name Greeks (Latin: Graeci) was used by the ancient Romans and gradually entered the European languages through its use in Latin. The mythological patriarch Hellen is the named progenitor of the Greek peoples; his descendants the Aeolians, Dorians, Achaeans and Ionians correspond to the main Greek tribes and to the main dialects spoken in Greece and Asia Minor (Anatolia).

The first Greek-speaking people, called Myceneans or Mycenean-Achaeans by historians, entered present-day Greece sometime in the Neolithic era or the Bronze Age. Homer refers to "Achaeans" as the dominant tribe during the Trojan War period usually dated to the 12th–11th centuries BC, using Hellenes to describe a relatively small tribe in Thessaly. The Dorians, an important Greek-speaking group, appeared roughly at that time. According to the Greek tradition, the Graeci (Latin; Ancient Greek: Γραικοί, Graikoi, "Greeks") were renamed Hellenes probably with the establishment of the Great Amphictyonic League after the Trojan War.

The Eleusinian Mysteries (Greek: Ἐλευσίνια Μυστήρια, romanized: Eleusínia Mystḗria) were initiations held every year for the cult of Demeter and Persephone based at the Panhellenic Sanctuary of Eleusis in ancient Greece. They are considered the "most famous of the secret religious rites of ancient Greece". Their basis was a Bronze Age agrarian cult, and there is some evidence that they were derived from the religious practices of the Mycenean period. The Mysteries represented the myth of the abduction of Persephone from her mother Demeter by the king of the underworld Hades, in a cycle with three phases: the descent (loss), the search, and the ascent, with the main theme being the ascent (ἄνοδος) of Persephone and the reunion with her mother. It was a major festival during the Hellenic era, and later spread to Rome.

The rites, ceremonies, and beliefs were kept secret and consistently preserved from antiquity. For the initiated, the rebirth of Persephone symbolized the eternity of life which flows from generation to generation, and they believed that they would have a reward in the afterlife. There are many paintings and pieces of pottery that depict various aspects of the Mysteries. Since the Mysteries involved visions and conjuring of an afterlife, some scholars believe that the power and longevity of the Eleusinian Mysteries, a consistent set of rites, ceremonies and experiences that spanned two millennia, came from psychedelic drugs . The name of the town, Eleusis, seems to be pre-Greek, and is likely a counterpart with Elysium and the goddess Eileithyia.