In what year did the French Revolution begin?
Which empire did Attila the Hun lead during his invasions of the Roman Empire in the 5th century AD?
Whose assassination in Sarajevo on 28 June 1914 is widely seen as the spark that triggered World War I?
Which Macedonian king had conquered the Persian Empire by the age of 30?
What was the name of the roughly 200-year era of peace and stability in the Roman Empire?