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1. 1576 – Spanish explorer Diego García de Palacio first sights the ruins of which ancient Mayan city ?
2. 1722 – The Safavid Empire of Iran is pushed into anarchy after being defeated by an army from which country at the Battle of Gulnabad ?
3. 1817 – The Stock Exchange of which city is founded on this day ?
4. 1868 – Sakai incident: Japanese samurai kill 11 sailors in the port of Sakai, Osaka. What was their nationality ?
5. 1910 – Raymonde de Laroche of France becomes the first woman to receive what type of licence ?
6. 1921 – Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting which building in Madrid ?
7. 1924 – A mine disaster kills 172 coal miners near Castle Gate, in which state ?
8. 1936 – Which racetrack holds its first oval stock car race ?
9. 1952 - Future US President Ronald Reagan marries Nancy Davis at the "Little Brown Church" in which Californian "Valley" ?
10. 1957 – Clive Burr, English rock drummer was born on this day, what band is he most associated with ?
11. 1971 – The "Fight of the Century" between Joe Frazier and which other boxer commences ? (Frazier wins in 15 rounds via unanimous decision)
12. 1972 - Today marks the first flight of which aircraft ?
13. 1974 – Which major International Airport opens on this day ?.
14. 2014 – Malaysia Airlines Flight 370, carrying a total of 239 people, disappears en route from Kuala Lumpur to which city ?
15. 2017 - The Azure Window, a natural rock arch, collapses during a storm on which European island?
16. 2018 - US President Donald Trump authorizes tariffs on steel and which other metal ?