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

2. What specific practice of the Catholic Church did Martin Luther's 95 Theses primarily attack?

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

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

5. How many years did Nelson Mandela spend in prison before his release in 1990?

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

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

8. Which international organization officially declared COVID-19 a pandemic in March 2020?

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

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

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

12. Which dynasty is responsible for the majority of the stone and brick Great Wall that exists today?

13. What unique method did the Incas use for record-keeping and communication in the absence of a written language?

14. What was the name of Blackbeard's famous flagship, a former French slave ship he captured in 1717?

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

16. What was the unintended social consequence of the invention of the cotton gin in the American South?

17. How did the spinning jenny change the productivity of a single textile worker?

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

19. What was the primary function of the Sputnik 1 satellite?

20. Which device did the transistor replace, allowing electronics to become much smaller and more efficient?