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1. 1676 – The Danish astronomer Ole Rømer presents the first quantitative measurements of what ?
Speed of Sound
Speed of Light
Distance to the Sun
Diameter of the Moon
2. 1789 – Which state ratifies the United States Constitution and is admitted as the 12th U.S. state ?
North Carolina
South Carolina
West Virginia
Maine
3. 1905 – Which scientist's paper that leads to the mass–energy equivalence formula, is published in the journal Annalen der Physik ?
J. Robert Oppenheimer
Max Planck
Albert Einstein
Alexander Fleming
4. 1910 – Sailors on board Brazil's warships violently rebel in what is now known as the Revolta da Chibata otherwise known as what ?
Bread Revolt
Revolt at Sea
Rum Revolt
Revolt of the Lash
5. 1918 – The Parliament (Qualification of Women) Act 1918 is passed, allowing women to do what in the UK ?
Vote
Stand for Parliament
Join the Armed Forces
Attend Universities
6. 1920 – Irish War of Independence: 31 people are killed in which city on a day that became known as "Bloody Sunday" ?
Belfast
Cork
Dublin
Donegal
7. 1922 – Rebecca Latimer Felton of which state takes the oath of office, becoming the first female United States Senator ?
Georgia
Florida
Louisiana
Tennessee
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 ?
10%
20%
30%
40%
9. 1961 – The "La Ronde" restaurant opens, it is the first revolving restaurant in the United States. But in which city ?
New York
Honolulu
Seattle
Dallas
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 ?
Operation Ivory Coast
Operation South Africa
Operation Skeleton Coast
Operation Sahara Desert
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 ?
Nicaragua
Lebanon
Bosnia and Herzegovina
Armenia
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 ?
United States
Argentina
Sierra Leone
Ukraine
13. 2004 – The Paris Club agrees to write off 80% (up to $100 billion) of which country's external debt ?
Iraq
Iran
Venezuela
Papua New Guinea
14. 2013 – Fifty-four people are killed when the roof of a shopping center collapses in which European capital city ?
Lisbon
Riga
Oslo
Ljubljana
15. 2017 – Robert Mugabe formally resigns as President of Zimbabwe, after how many years in office ?