61% knows the answer to this question: "What sort of headgear did Roman Centurions wear? "

And do you know the answer to this one? "Which space program went to the moon?"

81% knows the answer to this question: "What were the games that were held in Greece to honor the god Zeus called? "

And do you know the answer to this one? "Which of these was a name commonly given to the 1920s?"

77% knows the answer to this question: "Whom did Camilla Shand meet for the first time on a wet afternoon in 1972 at a polo field on Windsor Great Park? "

And do you know the answer to this one? "In February 1952, who went up Kenya's Treetops Hotel a princess, but came down a queen?"

37% knows the answer to this question: "Otto von Bismarck was a statesman from which country? "

And do you know the answer to this one? "What Roman town was destroyed by the eruption of Mt. Vesuvius?"

52% knows the answer to this question: "Which Hun emperor is called the Scourge of God? "

And do you know the answer to this one? "During which civil war did the battle of 'Gaines' Mill' take place?"

84% knows the answer to this question: "What was the first name of African-American 1930s athlete Owens? "

And do you know the answer to this one? "Which long spear was often used by mounted warriors during the medieval era?"

76% knows the answer to this question: "The Soweto uprising began in what country in 1976? "

And do you know the answer to this one? "Who was Oscar Wilde?"

79% knows the answer to this question: "Who was murdered in the Ides of March in 44 BC by a group of senators led by Brutus and Cassius? "

And do you know the answer to this one? "What is the domain ruled by a single authoritative sovereign?"

44% knows the answer to this question: "Who is Mikhail Gorbachev? "

And do you know the answer to this one? "What was the first name of Marx, a German communist philosopher?"

43% knows the answer to this question: "Who was the first woman to fly solo across the Atlantic? "

And do you know the answer to this one? "Dwight D. Eisenhower belonged to which political party?"

65% knows the answer to this question: "Complete the name of the philosopher. Karl _____. "

And do you know the answer to this one? "Of which country was Saddam Hussein leader during the 1990s?"

64% knows the answer to this question: "You can find the Lincoln Memorial at which location? "

And do you know the answer to this one? "In what U.S. state is New York City located?"