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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1789 | 30 november | French Department | |
| 1942 | 12 november | Italian occupation | gov. Giacomo Carboni |
| 1943 | february | gov. Giovanni Magli | |
| 1943 | 9 september | German occupation | |
| 1943 | 4 october | French Department | |
| 1991 | 13 may | French collectivité territoriale |