49% knows the answer to this question: "Which former First Lady died in 1994, 31 years after her husband was assassinated? "

And do you know the answer to this one? "What was the Model letter of Henry Ford's famous car?"

63% knows the answer to this question: "In which city was John F. Kennedy assassinated? "

And do you know the answer to this one? "What British politician and leader died April 8, 2013?"

92% knows the answer to this question: "What was the English King Richard I's nickname? "

And do you know the answer to this one? "Sparta, Athens and Crete are all cities of which ancient empire?"

93% knows the answer to this question: "What war ended on April 30, 1975, when the Viet Cong raised its flag above Independence Palace in Saigon? "

And do you know the answer to this one? "What did London's Whitechapel Bell Foundry deliver in August 1752, in time to celebrate Pennsylvania's 50th birthday?"

32% knows the answer to this question: "During which civil war did the battle of 'Tranter's Creek' take place? "

And do you know the answer to this one? "In which century was the Romantic poet Lord Byron born?"

30% knows the answer to this question: "Which of these was one of Abraham Lincoln's nicknames? "

And do you know the answer to this one? "Martin Luther was the founder of which branch of Christianity?"

69% knows the answer to this question: "The ancient Egyptian civilization was based around which river? "

And do you know the answer to this one? "Which country did Joan of Arc try to set free from English domination?"

49% knows the answer to this question: "Which of these wars started in 1914? "

And do you know the answer to this one? "In which US state did the Japanese attack Pearl Harbor in 1941?"

93% 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? "Queen's lead singer Freddie Mercury died in 1991 from pneumonia, as a result of what disease?"

47% knows the answer to this question: "Aristotle was a philosopher from which ancient civilisation? "

And do you know the answer to this one? "What sort of ships are the Vikings famously known to have used?"

53% knows the answer to this question: "Pharoahs were kings of which ancient civilisation? "

And do you know the answer to this one? "Founded in the 1970s, OPEC was a trade organisation for which industry?"

71% knows the answer to this question: "Amelia Earhart was the first woman to do what? "

And do you know the answer to this one? "What did Louis Braille invent?"