1. What modern sporting event is named after the legend of a messenger following the Battle of Marathon?

2. What was the first major book printed by Johannes Gutenberg using his movable-type press?

3. Who was the primary leader of the Haitian Revolution and a former slave himself?

4. The Meiji Restoration brought an end to which military-led era of Japanese history?

5. Whose improvements to the steam engine made it efficient enough to power the Industrial Revolution?

6. Which U.S. President signed the Civil Rights Act of 1964 into law?

7. In what year did Steve Jobs first unveil the iPhone to the public?

8. The bankruptcy of which major investment bank in September 2008 is seen as the climax of the financial crisis?

9. What was the name of the ship Charles Darwin sailed on while collecting evidence for his theory of evolution?

10. At which location did the Wright brothers perform their historic first flight in 1903?

11. According to Einstein's General Relativity, what is the fundamental cause of gravity?

12. What was the name of the bathyscaphe used to reach the Challenger Deep in 1960?

13. Which island was ceded to the British 'in perpetuity' following the First Opium War?

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

15. What famous metaphor did Adam Smith use to describe how self-regulating markets function?

16. What did the Bastille prison primarily symbolize to the people of Paris in 1789?

17. What was the legal difference between a pirate and a 'privateer' like William Kidd was originally intended to be?

18. Which of the five original ships was the only one to successfully complete the first circumnavigation of the world?

19. What was the name of the great library and intellectual center in Baghdad during the Islamic Golden Age?

20. Which animal is primarily responsible for carrying the fleas that spread the Black Death?