Emperor Darius I, also known as Darius the Great, ruled the Persian Empire from 522 to 486 B.C. Darius is best remembered for his military campaigns, architectural wonders, and bureaucratic government organization.
Radar scans of Tutankhamun's tomb prove there are no hidden chambers or passages, as was once believed by archaeologists. An investigation began three years ago to find out if Queen Nefertiti might be hidden behind Tut's 3,300-year-old burial chamber.
On this day in 1936, Edward VIII became first monarch to abdicate the throne after he insisted on marrying a twice-divorced American socialite. He had ruled for less than a year; the next day, his younger brother was proclaimed King George VI.
King George III ruled the British kingdom through turbulent times, including the American Revolutionary War, after which the colonies gained independence. Until Queen Victoria, he was Great Britain’s longest-reigning monarch.