The souls of the dead became the first gods, whose happiness depended on regular offerings from the living.
Fustel speculates that this ancestor worship was the European peoples' first inkling of the supernatural.
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Based on: https://youtu.be/VJ2TDGG4ibY
Music: Into Oblivion, by Darren Curtis
Thumbnail Image: Parthenon. Image by nonbirinonko from Pixabay, https://pixabay.com/photos/greece-parthenon-temple-ruins-1594689/