What did Galeazzo Ciano leave behind that has been used as a source by historians?
A diary
A series of letters
A collection of speeches
An autobiography
Answer
Galeazzo Ciano wrote and left behind a diary that has been used as a source by several historians, including William Shirer in his The Rise and Fall of the Third Reich and in the four-hour HBO documentary-drama Mussolini and I.
A Diplomat's Demise: The Fascinatingly Tragic Tale of Galeazzo Ciano