ANSWERS

1. The Battle of Bouvines. The French king was Philip II (Philip Augustus).

2. The Bank of England

3. The Great Eastern

4. Vincent van Gogh

5. Insulin, isolated by Frederick Banting and Charles Best

27 July 1921 is often given as the date Banting and Best first isolated insulin, from a dog's pancreas. Some histories describe the work as taking place over that summer rather than on a single day, which is why the question says "in the summer of 1921".

6. Bugs Bunny, "What's up, Doc?"

7. The Korean War. It was signed at Panmunjom.

8. Danny Boyle

9. James Bond, played by Daniel Craig

10. The de Havilland Comet

11. The Austrian State Treaty

The Austrian State Treaty was signed in Vienna on 15 May 1955, and came into force on 27 July 1955.

12. Alexandre Dumas (fils). The opera is "La Traviata".

13. Hilaire Belloc

14. Norman Lear

15. Bobbie Gentry

16. Leo Durocher

17. Gertrude Stein

18. Bob Hope

19. John Dalton. Colour blindness was called "Daltonism".

20. Madonna