| Date | Event |
|---|---|
| September 01 1870 | Prussians Win The Battle Of Sedan |
| September 02 1870 | Prussian Forces Capture Napoleon III In Battle Of Sedan |
| September 03 1870 | Prussian Troops Victorious In Siege Of Metz |
| September 04 1870 | Napoleon III Deposed. Third Republic Declared |
| September 06 1870 | Louisa Swain Votes Legally In Wyoming |
| September 18 1870 | Washburn Names Old Faithful During Expedition Yellowstone |
| September 19 1870 | Prussia Defeats Paris In 1871 |
| September 19 1870 | Italian Army Lays Siege To Rome |
| September 20 1870 | Rome Taken, Italian Unification Complete |