1. On 28 August 1963, Martin Luther King gave his "I Have a Dream" speech in Washington. In front of which memorial?

2. On 28 August 1833, the law from your 1 August round, which abolished slavery in most of the British Empire, received royal assent. What was it called?

3. On 28 August 1789, the astronomer from your 15 November round discovered a moon of Saturn that is now known to spray water into space. Which moon?

4. Which American science magazine, the oldest continuously published monthly in the US, was first published on 28 August 1845?

5. On 28 August 1898, a pharmacist in North Carolina gave his drink, until then called "Brad's Drink", a new name. What was it?

6. A delivery company founded in Seattle on 28 August 1907, as the American Messenger Company, is now known by three letters. What are they?

7. On 28 August 1922, a New York radio station broadcast something for the first time, for a property company. What was it?

8. On 28 August 1996, the divorce of which royal couple became final?

9. On 28 August 2008, exactly 45 years after the speech in question 1, who accepted the Democratic nomination for president in Denver?

10. On 28 August 1850, Wagner's opera "Lohengrin" premiered in Weimar. Which composer, from your 22 October round, conducted it?

11. The German writer from your 22 March round was born in Frankfurt on 28 August 1749. The date of the premiere in question 10 was chosen in his honour. Who was he?

12. The Russian novelist from your 20 November round was born on 28 August 1828 in the Russian calendar of the time. Who was he?

13. An American woman born on 28 August 1774 became the first person born in the United States to be made a saint. Who was she?

14. An English painter born on 28 August 1833 was a leading Pre-Raphaelite and a lifelong friend of the designer from your 3 October round. Who was he?

15. An American actor and dancer born on 28 August 1925 performed the acrobatic "Make 'Em Laugh" in the film from your 1 April round. Who was he?

16. A Canadian country singer born on 28 August 1965 had hits with "Man! I Feel Like a Woman!" and "You're Still the One". Who is she?

17. Two actors were born on 28 August 1969: one starred in "School of Rock", and the other played Brandon Walsh in "Beverly Hills, 90210". Name both.

18. A British singer born on 28 August 1986 fronts a band with a name that ends "... and the Machine". Who is she?

19. A North African bishop and theologian who wrote "Confessions" and "The City of God" died on 28 August 430, now his feast day. Who was he?

20. An American film director died on 28 August 1987. He directed "The Maltese Falcon" with the actor from your 14 January round. Who was he?