51% knows the answer to this question: "Which historical figure was the last queen of France? "

And do you know the answer to this one? "What well-known building in Asia symbolizes eternal love and is widely considered as one of the world's most beautiful buildings?"

39% knows the answer to this question: "What was O.J. Simpson charged with when he was arrested in 1994? "

And do you know the answer to this one? "2014 marked the release of a drug with a 90-95% success rate against which liver disease?"

91% knows the answer to this question: "Who was Henry Kissinger? "

And do you know the answer to this one? "Boris Yeltsin was President of which country between 1991 and 1999?"

61% knows the answer to this question: "In 1773, colonists boarded three East India Company ships and destroyed their tea cargo by throwing it into Boston Harbor. What is this event known as today? "

And do you know the answer to this one? "Which country did England fight in the Battle of Waterloo?"

70% knows the answer to this question: "At what battle was Napoleon defeated in 1815? "

And do you know the answer to this one? "Complete the name of the philosopher. Karl _____."

82% knows the answer to this question: "What medieval plague killed off so much of Europe that those left behind had higher wages and more disposable income, which they used on linen clothes, which meant an abundance of rags, dropping the cost of paper over parchment, so it became economical for German goldsmith Johann Gansfleisch, better known by his mother's name of Gutenberg, to invent printing? "

And do you know the answer to this one? "Captain Henry Morgan used what island as a base of buccaneer operations?"

63% knows the answer to this question: "In which century was former US President Dwight Eisenhower born? "

And do you know the answer to this one? " Which woman was nicknamed "the lady of the lamp"?"

57% knows the answer to this question: "What German title meaning "leader" or "guide" did Adolf Hitler grant to himself? "

And do you know the answer to this one? "How did John Lennon die?"

56% knows the answer to this question: "In 1994, who was elected the first black President of South Africa? "

And do you know the answer to this one? "What was the official secret police of Nazi Germany and German-occupied Europe?"

39% knows the answer to this question: "In 1966, Indira Gandhi became the prime minister of what country? "

And do you know the answer to this one? "What year did the Jews in Poland's Warsaw ghetto start to fight the Nazis?"

61% knows the answer to this question: "Why was the Great Wall of China built? "

And do you know the answer to this one? "Who invented a system of raised dots, allowing blind people to read?"

39% knows the answer to this question: "What are soldiers who fight on horseback? "

And do you know the answer to this one? "What volatile gas was responsible for the Hindenburg disaster in 1937?"