ANSWERS

1. 4004 BC

Ussher published his date in 1650. He worked it out from the Bible's genealogies and other historical sources.

2. Warwickshire

The battle was indecisive, and both sides claimed victory.

3. Imre Nagy

On 23 October 1989, the anniversary of the revolution, Hungary declared itself a republic.

4. The Desert Fox

5. 1,000 ("1,000 songs in your pocket")

The iPod was announced on 23 October 2001 and went on sale in November.

6. Dublin Castle

7. Italy (during the Italo-Turkish War)

8. Brazilian

Europeans celebrated it as the first flight because the Wright brothers' flights in 1903 to 1905 were little known and poorly documented at the time. In Brazil, Santos-Dumont is still widely regarded as the inventor of the aeroplane.

9. Les Schtroumpfs (the Smurfs); Peyo

10. Avogadro's number (Avogadro's constant), about 6.02 × 10²³

11. Three (1958, 1962 and 1970) (Pelé)

12. ER (Michael Crichton)

13. The Tonight Show (Johnny Carson)

14. Life of Pi (Ang Lee)

15. Beat It ("Weird Al" Yankovic)

16. Wrexham (Ryan Reynolds)

17. Swim the English Channel (Gertrude Ederle)

18. Pierre Larousse

19. Emilia Clarke

20. Spider-Man (Sam Raimi)