236. Against which country did the Dutch Republic fight the Eighty Years' War?
237. Which of these positions did the astronomer and physicist Isaac Newton not hold?
238. The Tsar Bomba, the most powerful nuclear bomb ever tested, had a yield of 50 megatons but theoretically had a maximum yield of how much?
239. The Battle of Hastings was fought in which year?
240. Who rode on horseback to warn the Minutemen that the British were coming during the U.S. Revolutionary War?