John Lennon released his second album, “Imagine.”
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Mark David Chapman pleaded guilty to the murder of John Lennon in New York.
John Lennon and Yoko Ono planted acorns for world peace after also mailing acorns to many world leaders to do the same.
John Lennon's wife, Yoko Ono, was granted permanent residence in the United States.
John Lennon's album 'Walls and Bridges' was released in the US.
Paul McCartney announced he would leave The Beatles.
