On This Day (November 21st) Multiple Choice

1. 1676 – The Danish astronomer Ole Rømer presents the first quantitative measurements of what ?

2. 1789 – Which state ratifies the United States Constitution and is admitted as the 12th U.S. state ?

3. 1905 – Which scientist's paper that leads to the mass–energy equivalence formula, is published in the journal Annalen der Physik ?

4. 1910 – Sailors on board Brazil's warships violently rebel in what is now known as the Revolta da Chibata otherwise known as what ?

5. 1918 – The Parliament (Qualification of Women) Act 1918 is passed, allowing women to do what in the UK ?

6. 1920 – Irish War of Independence: 31 people are killed in which city on a day that became known as "Bloody Sunday" ?

7. 1922 – Rebecca Latimer Felton of which state takes the oath of office, becoming the first female United States Senator ?

8. 1945 – The United Auto Workers strike at 92 General Motors plants in 50 cities to back up worker demands for a pay raise of what percentage ?

9. 1961 – The "La Ronde" restaurant opens, it is the first revolving restaurant in the United States. But in which city ?

10. 1970 – Vietnam War: A joint USAF and Army team raids the Sơn Tây POW camp in an attempt to free Americans thought to be held there. It was known as what operation ?

11. 1995 – The Dayton Agreement is initialed at the Wright-Patterson Air Force Base, near Dayton, Ohio, ending three and a half years of war in which country ?

12. 2004 – The second round of the presidential election is held, giving rise to massive protests and controversy over the election's integrity in which country ?

13. 2004 – The Paris Club agrees to write off 80% (up to $100 billion) of which country's external debt ?

14. 2013 – Fifty-four people are killed when the roof of a shopping center collapses in which European capital city ?

15. 2017 – Robert Mugabe formally resigns as President of Zimbabwe, after how many years in office ?