The Mandela Effect is a psychological phenomenon where a large group of people share a false memory about a common event or image. The term was coined in 2009 by paranormal researcher Fiona Broome after she misremembered that Nelson Mandela died in prison in the 1980s. In reality, Mandela was released from prison in 1990, served as South African president from 1994 to 1999, and died in 2013.
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