The World Council of Churches (WCC) was founded with 147 churches from 44 countries.
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During the French Revolution, a mass levy was adopted, making it compulsory for any able-bodied men aged 18 to 25 to join military service.
Armenia declared its independence from the Soviet Union.
Napoleon Bonaparte left Egypt to return home to France.
The first-ever photograph was taken of the Earth from the surface of the Moon.
Mars had a 'close encounter' with Earth at 34.8 million miles apart.
