6. Cairo
Largest city in Africa, capital of Eqypt, located on the Nile River since 3100 BC
Where does the word 'Cairo' come from? (choose the one best answer)
A. From the Arabic words al qahira which means either 'the victorius' or 'the strong.'
B. After the indiginous cairo root, which when pounded and boiled makes a syrup.
C. Named after Kyro, a mythical Greek island, located between Kythiro and Kymos.
D. Deconstructed from the Middle English word cairn, meaning a 'mound of stones.'

Although not the oldest of Egypt's 70 polyhedrons, the Great Pyramids are the biggest things from Gaza to Giza.
Built around 2500 BC these royal tombs rank among the 7 Wonders of the World, and are visible today by the 10 million residents throughout Cairo's 175 square miles.
When dissident Fatimid Muslims conquered Egypt in AD 696, they claimed the rich delta basin (and site of the Roman city Babylon) as their own -- so A is correct.
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