The NFL started using the instant replay rule where video is analyzed to review what had just happened in a game.
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More than 20,000 people were killed after Mount Etna erupted in Sicily.
The Empire of Japan established the Empire of Vietnam, which acted as a puppet state to Japan.
Queen Elizabeth II knighted Paul McCartney from the Beatles.
The Spanish Flu received its first case in the US.
The existence of the giant panda became known to the Western world after French Armand David received a giant panda's skin from a hunter.
