Virginia became the first state to ratify the Articles of Confederation.
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Vasco da Gama became the first European to sail along Africa's East Coast.
The Pioneer 6 space probe was launched atop a Delta-E rocket.
German armies took Allied forces by surprise in the Ardennes, marking the beginning of the Battle of the Bulge.
The Boston Tea Party protest occurred.
'Jingle Bells' became the first song played in space when it was broadcast during NASA's Gemini 6 space flight.
