Benito Amilcare Andrea Mussolini ( 29 July 1883 - 28 April 1945 ) ruled Italy as a dictator from 1927 to 1943 . Benito Amilcare Andrea Mussolini ( ; 29 July 1883 - 28 April 1945 ) was an Italian politician who led the National Fascist Party and is credited with being one of the key figures in the creation of Fascism .