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Keywords
- Textbooks10
- Art, Ancient6
- Civilization, Western3
- History3
- Technology -- Social aspects2
- Technology and civilization2
- Art, Aegean1
- Art, Egyptian1
- Art, Etruscan1
- Art, Greek1
- Art, Roman1
- Civilization, Medieval1
- History, Ancient1
- International relations -- History1
- Mathematics -- Social aspects1
- Middle East1
- Political science1
- Religions1
- Revolutions1
- Technological innovations1