1. On 4 June 1989, Poland held partly free elections. Which movement, from your 24 October round, won almost every seat it was allowed to contest?

2. At the Epsom Derby on 4 June 1913, a suffragette ran onto the course and was struck by the King's horse. Who was she?

3. On 4 June 1940, as the Dunkirk evacuation ended, Winston Churchill gave a famous speech to Parliament. With what words is it usually remembered?

4. A decisive naval battle in the Pacific began on 4 June 1942, in which the US sank four Japanese aircraft carriers. Name the battle.

5. On 4 June 1944, which European capital was liberated by the Allies, just two days before D-Day?

6. On 4 June 1783, the brothers from your 26 August round gave their first public demonstration of a hot-air balloon. In which French town?

7. On 4 June 1896, the car maker from your 30 July round test-drove his first vehicle in Detroit, after knocking down a wall because it was too wide for the door. What was it called?

8. On 4 June 1919, Congress passed the women's suffrage amendment and sent it to the states. Which amendment, from your 26 August round?

9. A treaty signed on 4 June 1920 at a palace near Paris took away about two thirds of one country's territory after the First World War. Name the treaty and the country.

10. Which Pacific kingdom became independent from Britain on 4 June 1970?

11. The king from your 25 October round was born on 4 June 1738. Who was he?

12. An American actress born on 4 June 1975 won an Oscar for "Girl, Interrupted" and played Lara Croft. Who is she?

13. A British jockey born on 4 June 1948 won the 1981 Grand National on Aldaniti, after recovering from cancer. Who is he?

14. A singer born on 4 June 1944 was a member of The Mamas and the Papas. Who is she?

15. A German footballer born in Poland on 4 June 1985 won the 2014 World Cup and scored 49 goals for Germany. Who is he?

16. The last German emperor, from your 30 July round, died in exile in the Netherlands on 4 June 1941. Name him and the Dutch town where he died.

17. A famous Venetian adventurer and lover died on 4 June 1798, while working as a librarian in a castle in Bohemia. Who was he?

18. A battle fought in northern Italy on 4 June 1859 gave its name to a new purplish-red dye. Name the battle.

19. On 4 June 1937, a supermarket in Oklahoma City introduced a new invention to help customers carry more goods. What was it?

20. On 4 June 1944, the US Navy captured a German U-boat at sea, the first enemy warship captured by the US Navy since 1815. Which U-boat? In which Chicago museum is it now?