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1. 1173 – Construction of the campanile of the Cathedral of Pisa (now known as the Leaning Tower of Pisa) begins; it will take how long to complete ?
2. 1810 – Napoleon annexes which region as part of the First French Empire ?
3. 1830 – Louis Philippe becomes the king of the French following abdication of which monarch ?
4. 1892 – Thomas Edison receives a patent for which invention ?
5. 1907 – The first Boy Scout encampment concludes on which island in southern England ?
6. 1930 – Which character makes her cartoon debut in Dizzy Dishes ?
7. 1936 – Summer Olympic Games: Games of the XI Olympiad: Jesse Owens wins which of his gold medals at the games ?
8. 1944 – The United States Forest Service and the Wartime Advertising Council release posters featuring what for the first time ?
9. 1945 – World War II: Nagasaki is devastated when an atomic bomb is dropped by the United States B-29 "Bockscar". What was the bomb called ?
10. 1965 – Which nation becomes the only country to date to gain independence unwillingly ?
11. 1973 – Mars 7 is launched from which country ?
12. 1993 – The Liberal Democratic Party of Japan loses a hold on national leadership after how many years ?
13. 2006 – At least 21 suspected terrorists were arrested in the United Kingdom. The arrests were made in London, Birmingham, and which other town ?
14. 2019 – 220 million trees are planted in one day in which Indian region ?
15. 1946 – Rinus Gerritsen, Dutch rock bass player, is born. He is known for being a member of which Dutch band ?