• 1 · Religion and Magic
• 2 · Nature
• 3 · Human Being, Man in General
• 4 · Society, Civilization, Culture
• 5 · Abstract Ideas and Concepts
• 6 · History
• 7 · Bible
• 8 · Literature
• 9 · Classical Mythology and Ancient History

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• 2 · Nature
• 23 · time
• 23S · the empires of the world

23S1 · the four world empires (Babylon, Persia, Greece, Rome)

• 23S11 · Babylon (one of the four world empires)
• 23S12 · Persia (one of the four world empires)
• 23S13 · Greece (one of the four world empires
• 23S14 · Rome (one of the four world empires)