77% knows the answer to this question: "What 19th-century figure took marijuana to relieve menstrual cramps? "

And do you know the answer to this one? "What Mesopotamian city, the capital of a powerful empire from the second millennium BC, did the Bible use as a metaphor of evil?"

70% knows the answer to this question: "In what year did Nazi troops invade Soviet Russia? "

And do you know the answer to this one? "Which army used poison gas as a weapon in the 1915 Battles of Ypres?"

85% knows the answer to this question: "Who began to preach the religion of Islam openly in Mecca in the beginning of the 7th century? "

And do you know the answer to this one? "The 1972 Bloody Sunday shootings took place in which part of the UK?"

46% knows the answer to this question: "In India, the enormous, beautiful tomb of Shah Jahan's wife is called what? "

And do you know the answer to this one? "In 2014, the International Court of Justice ruled that what country should stop its whaling program?"

55% knows the answer to this question: "Who voted for the first time in the elections for the National Assembly of Kuwait in 2006? "

And do you know the answer to this one? "Which US state had a gold rush from 1848 to 1855?"

72% knows the answer to this question: "Which President of North Korea ordered the execution of his own uncle in 2013? "

And do you know the answer to this one? "Who ruled as Soviet dictator from 1924 until 1953?"

62% knows the answer to this question: "What country was home to the Inca Empire? "

And do you know the answer to this one? "The last of Australia's combat troops withdrew from what country in 2013?"

43% knows the answer to this question: "Who invented the telephone? "

And do you know the answer to this one? "Who gave her son Prince Charles the customary title of Prince of Wales?"

69% knows the answer to this question: "Mohandas Gandhi is known best as this? "

And do you know the answer to this one? "The Soweto uprising began in what country in 1976?"

32% knows the answer to this question: "What was the name of the brothers who made the first controlled, sustained flight of a powered aircraft? "

And do you know the answer to this one? "This German printer invented the printing press in 1440."

53% knows the answer to this question: "General Charles de Gaulle was elected president of what country with 78.5% of the votes in 1958? "

And do you know the answer to this one? "What name was given to a ruler of Ancient Egypt? "

94% knows the answer to this question: "What monarch made repeated visits to the front throughout WWI, earning him the deep respect of his subjects? "

And do you know the answer to this one? "Latvia officially adopted which currency in 2014?"