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1.
Chernobyl nuclear incident
4.
First ever plane is invented
6.
First sub-4 minute mile
8.
Russian invasion of Crimea
9.
The first man is sent into space
10.
First ever Olympic games
11.
First time a proton beam is circulated in Large Hadron collider
13.
Queen Elizabeth II is born
14.
Obama first sworn in as president