Armenia declared its independence from the Soviet Union.
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The World Council of Churches (WCC) was founded with 147 churches from 44 countries.
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.
The largest farm worker strike in US history began.
The first-ever photograph was taken of the Earth from the surface of the Moon.
India became the fourth nation to successfully land a spacecraft on the Moon.
