The United States broke diplomatic and consular relations with Cuba.
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The cryptocurrency 'Bitcoin' was created, providing a new digital currency.
A woman in Rome became the first person to receive a bionic hand that can sense touch.
The Mars Polar Lander was launched.
China's Chang'e-4 became the first spacecraft to successfully land on the far side of the Moon.
During the Battle of Princeton, British forces were defeated in New Jersey by George Washington's revolutionary army.
