30% knows the answer to this question: "In ancient Rome, Spartacus was a famous what? "

And do you know the answer to this one? "In 2012, 620 million people were left without power after a blackout in which country?"

86% knows the answer to this question: "Adolf Hitler become the chancellor of Germany in what year? "

And do you know the answer to this one? "In what year did Israel become an official country?"

41% knows the answer to this question: "What was established as the body of international cooperation after the First World War? "

And do you know the answer to this one? "Which country annexed the Crimean peninsula in 2014?"

54% knows the answer to this question: "What video game broke industry sales records with its release in 2013? "

And do you know the answer to this one? "In 1947, who was the first person to break the sound barrier?"

62% knows the answer to this question: "Which ideological movement gained prominence in the mid-1960s? "

And do you know the answer to this one? "The artificial what was invented in 1969?"

66% knows the answer to this question: "What was the Soviet bloc's 1954 equivalent to NATO called? "

And do you know the answer to this one? "What is the historical period that took place in Europe after the fall of the Roman Empire often called?"

92% knows the answer to this question: "Who sang the famous song "Invisible Touch" (1986) "

And do you know the answer to this one? "Megan Fox was born in 1986. What is she famous for?"

92% knows the answer to this question: "Reports released in 2013 showed that the US was spying on which German Chancellor? "

And do you know the answer to this one? "One of these former presidents was sworn in 2009. Which was it?"

40% knows the answer to this question: "Which country was invaded in 1956 when it nationalized the Suez Canal? "

And do you know the answer to this one? "Who became the first Emperor of a unified China in 221 BC?"

85% knows the answer to this question: "What company did John Stuart Mill work for more than 30 years? "

And do you know the answer to this one? "Who was the first to be known for using methods of nonviolent civil disobedience in protest?"

92% knows the answer to this question: "Narendra Modi became President of which country in 2014? "

And do you know the answer to this one? "Which country bankrolled Columbus' expedition to discover America in 1492?"

92% knows the answer to this question: "Rio's "Carnival" takes place at the same time as what U.S. event? "

And do you know the answer to this one? "300 people were arrested in what Russian city during an anti-Vladimir Putin protest in 2012?"