In what year did Alexandre Fleming discover penicillin?,

In what year did Ricardo Coração de Leão and Saladin sign a truce?,

Answer: 1192,

In what year did Einstein publish his four Annus Mirabilis ('Miracle Articles')?,

Answer: 1905,

In what year did Mark Zuckerberg create Facebook?,

Answer: 2004,

In what year did the Battle of Guandu take place?,

Answer: 200 (non-AC),

In Russian history, what nickname did the first Tzar receive for his tyranny?,

Answer: Ivan the Terrible,

In what year was the Napoleonic Code established?,

Answer: 1804,

In which year did the first Wimbledon Tennis Championships take place?,

Answer: 1877,

In what year was the first edition of 'The Diary of Anne Frank' published?,

Answer: 1947,

In what year was the Soviet Union formally founded?,

Answer: 1922,

In what year was equestrianism included as an Olympic sport for the first time?,

Answer: Paris Olympic Games, 1900,

In what year was the Tianwen-1 Mars probe launched?,

Answer: 2020,

In the 16th-17th centuries, what disease did the famous 'plague doctors' masquerading as birds treat?,

Answer: Bubonic plague,

In what era Chinese history did the 'battle of Fei River' take place where a small number of soldiers conquered a vastly superior force?

Answer: The Eastern Jin Dynas

From the 13th to the 11th century CE, what did Europeans often call the Scandinavian invaders who often attacked their lands?,

Answer: Vikings,