|
|
| YEAR | DATE | EVENT | PRIME MINISTER |
| 1820 | 16 february | Argentina provence | |
| 1854 | 28 may | Independent state | Pastor Servando Obligado Tejedor |
| 1857 | 5 may | Valentín Alsina y Ruano | |
| 1859 | 8 november | Felipe Llavallol Merlo | |
| 1859 | 13 november | Reunion to Argentina | |
| 1861 | 5 july | Independent state | Bartolomé Mitre Martínez |
| 1862 | 3 june | Reunion to Argentina |