After invading Finland, the Soviet Union was kicked out of the League of Nations.
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A Norwegian expedition became the first to ever reach the geographical South Pole – led by Roald Amundsen.
The Mariner 2 space probe completed the first-ever flyby of Venus.
A British surgeon admitted to branding his initials on patients' livers.
Princess Mary Stuart succeeded her father James V and became Queen Mary I of Scotland at just six days old.
At 2 PM EST, there was a 10 minute moment of silence in memory of John Lennon.
