The first motion picture was shown to a theater audience at the Philadelphia Academy of Music.
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US President Donald Trump was acquitted of impeachment charges by the US Senate.
NASA's Apollo 14 mission landed on the Moon.
A nuclear bomb was lost off the coast of Georgia, US.
The vice president of Google, Susan Wojcicki, became the CEO of YouTube.
The Comic Relief charity created ''Red Nose Day" in the United Kingdom, and raised £15 million ($19 million).
