On this day in 1804, Napoleon Bonaparte was proclaimed Emperor of France, 11 years after King Louis XVI was guillotined during the Revolution, ending the monarchy.
On this day in 1944, Moscow began the expulsion of over 200,000 Tartars from the Crimea, accusing them of collaborating with Germany.
On this day in 1977, the United States, the USSR and 29 other countries signed a UN pact banning artificial use of the weather as a weapon of war, pledging never to attack each other by starting man-made storms, earthquakes or tidal waves.
And on this day in 1980, Mount St. Helens volcano in Washington State erupted, sending a cloud of ash into the sky 2,500 miles high and 1,000 miles wide.