44% knows the answer to this question: "Which form of transportation was invented first? "

And do you know the answer to this one? "When Basil III died, the boyars tried to seize power from what toddler king, who turned out to be a sociopath?"

68% knows the answer to this question: "In what year did Hitler annex Austria? "

And do you know the answer to this one? "What was the severe worldwide economic depression that took place mostly during the 1930s called?"

59% knows the answer to this question: "Who co-authored the famous pamphlet 'The Communist Manifesto' with Friedrich Engels? "

And do you know the answer to this one? "What powerful king of the Huns was nicknamed the scourge of God?"

75% knows the answer to this question: "Dwight D. Eisenhower belonged to which political party? "

And do you know the answer to this one? "What was the name of the wife Nelson Mandela divorced in 1996?"

59% 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?"

82% knows the answer to this question: "Which animal was considered sacred by ancient Egyptians? "

And do you know the answer to this one? "During what War did the 1847 'Siege of Pueblo de Taos' take place?"

87% knows the answer to this question: "What was the name of the Lakota chief who led the allied Native American tribes with Chief Gall and Crazy Horse at the Battle of the Little Bighorn? "

And do you know the answer to this one? "Greenland wasn't really green, and Vinland wasn't really covered in vines. Who named them both, and icy Iceland, besides?"

47% knows the answer to this question: "Which British queen died in 1901? "

And do you know the answer to this one? "David Richard Berkowitz is an American serial killer who terrorized New York City in the mid-1970s. What was his nickname?"

46% knows the answer to this question: "King Juan Carlos I abdicated as King of which country in 2014? "

And do you know the answer to this one? "During which civil war did the Second 'Battle of Fort Fisher' take place?"

59% knows the answer to this question: "Which flag, used by pirates, featured a skull and cross-bones? "

And do you know the answer to this one? "Which famous scientist was born in Germany in 1879, became a Swiss citizen in 1901 and later became a US citizen in 1940?"

78% knows the answer to this question: "What fruity California county was created by two lawyers who took the land to settle a debt? "

And do you know the answer to this one? "Which of these fortresses is not in Europe?"

54% knows the answer to this question: "Which of these countries is divided into Highlands and Lowlands? "

And do you know the answer to this one? "In which natural environment are 'dunes' found?"