Pyramids of Giza By KennyOMG – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=40998161

Kogi people By Mäůřıçîö Bolaño – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=92192124

Selected Bibliography

City of London skyline from Tower Bridge By GJMarshy – Own work,
CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=112338049

Red Terror, Guards at the grave of Moisei Uritsky. Petrograd.
Translation of the banner: “Death to the bourgeois and their helpers. Long live the Red Terror.”

Roman collared slaves. — Marble relief, from Smyrna (Izmir, Turkey), 200 CE. Collection of the Ashmolean Museum, Oxford, England.
By Jun – Flickr: Roman collared slaves, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=16289799

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