The Roman Republic existed from 9 February 1849 to 3 July 1849. The Republic was established after Pope Pius IX fled to 
Gaeta (click for geospatial location) to the protection of King Ferdinand II of Naples (click for geospatial location), following the assassination of the papal Minister of Justice. Image: Lithograph of ‘Proclamazione delle Repubblica Romana’, 1849 (published in 1861). This image is in the public domain in the United States because its copyright has expired.
Articles
Alison Chapman, “On Il Risorgimento“
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Marjorie Stone, “On the Post Office Espionage Scandal, 1844″
