1. In which year did the Berlin Wall fall, marking the symbolic end of the Cold War?

2. What was the name of the ship on which the Pilgrims traveled to America in 1620?

3. In what year was the Berlin Wall first erected to separate East and West Berlin?

4. Which Ottoman leader commanded the forces that captured Constantinople in 1453?

5. The Slavery Abolition Act of 1833 provided massive financial compensation to which group of people?

6. What was the official codename for the Allied invasion of Normandy on June 6, 1944?

7. What term did President Kennedy use for the naval blockade of Cuba to avoid a formal declaration of war?

8. What was the first message ever sent over ARPANET, even though the system crashed mid-transmission?

9. Which federal department was created in the United States as a direct result of the 9/11 attacks?

10. In which year was the wreck of the RMS Titanic finally discovered?

11. How many African representatives were present at the Berlin Conference of 1884?

12. From which animal did Edward Jenner derive the material for the first-ever vaccine?

13. What was the name of the 'floating gardens' or artificial islands used by the Aztecs for agriculture?

14. Who became the King of England as a result of the Battle of Hastings?

15. Which famous female pharaoh led a major trade expedition to the Land of Punt?

16. What was the name of the spacecraft that carried Yuri Gagarin into orbit?

17. By what method was King Louis XVI executed in 1793?

18. What type of organism did Alexander Fleming discover was capable of killing bacteria in 1928?

19. In which city did the first successful human heart transplant take place?

20. The Battle of Stalingrad was fought between which two primary nations?