| Date | Event |
|---|---|
| December 02 1845 | Manifest Destiny: President Polk Proposes US Expands West |
| December 27 1845 | Ether Anesthetic Tested On Pregnant Mother |
| December 27 1845 | O'Sullivan Claims US Has Right To Oregon Country |
| December 29 1845 | Republic Of Texas Becomes 28th State |