Salvete,
I copied Ariadne's questions and added a few of my own. I had to correct one question though. There was one "Which wrote a book on the Gaul wars" to which the answer was "Iulius Caesar". The answer, technically, is "none" because Caesar was not an emperor

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Now, anyway, here are a few of my own...
GEOGRAPHY
12. Which island is, freely translated, "the island of love"? Cyprus
13. What does the name of the Italian area of Tuscany refer to? The Etruscans
14. Where is Hadrian's wall located? The border between Scotland and England
15. What is the present-day name of Hibernia? Ireland
16. What is the present-day name of Dacia? Romania (and, in part, Moldova)
17. Which city in present-day Ukraine refers to a Greek hero? Odessa.
18. While Caesar wanted to make the Rhine the Roman Republic's border, Augustus wanted to extend the border of the Empire to another river. Which one? The Elbe.
19. Which of these present-day nations was never part of the Roman Empire? Switzerland or Poland? Poland.
20. What was the Roman name for Africa? Africa.
21. What was the Roman name for the northernmost point of the world? Thule.
22. The empire of Alexander the Great began in Macedonia and stretched itself to which river? The Indus.
HISTORY
11. Who was allegedly the last emperor of the western half of the Roman Empire? Romulus Augustulus.
12. Who introduced the concept of the tetrarchy? Diocletianus.
13. Which dynasty succeeded the Julio-Claudians? The Flavian dynasty.
14. In which year was Carthago finally defeated and destroyed? 164 BC.
15. What was the fate of the slaves who joined Spartacus in his revolt in 73 BC? Crucifixion.
16. Whose last words allegedly were "Applaud; the comedy is over."? Augustus.
17. What was the "damnatio memoriae"? The deletion of an individual from the collective memory, considered worse than execution and worse than banishment.
18. What island was, according to some, home to the decadent lifestyle of emperor Tiberius? Capri.
19. Some die-hards claim the Roman Empire existed until 1806. Why? Because the Holy Roman Empire of Germany had ceased to exist.
20. Who was considered the wisest political leader of Athens ever to exist? Solon.
SCIENCE & PHILOSOPHY
9. What is the 'kalakogathia'? The supreme ideal ("both good and beautiful") of Platonic thought.
10. What philosopher allegedly jumped into a volcano? Empedokles.
11. Which philosopher claimed movement and time did not exist? Parmenides.
12. Which philosopher held that the basic element of everything is water? Thales.
13. Which writer and scientist died while examining the volcano at Pompeii in 79 AD? Plinius the Elder.
14. What is the name of the mathematics that are taught at most schools? Euclidian mathematics.
15. Are there more stars with Greek names, or more with Arab names? Arab names.
16. Why is Aries the first star sign of the zodiac? Because the Roman year began in March.
17. Which Alexandrian mathematician and astronomer thought the Earth to be the centre of the universe? Ptolemaeus.
18. Which mathematician claimed that the Earth was round? Eratosthenes.
19. Which sanitary invention is usually attributed to the Etruscans? The sewage system.
20. What language does the modern day science word "satellite" derive from? Etruscan.
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Draco
Gn. Dionysius Draco Invictus