| 1 | 1846 | - 1846—1846: HISTORY: Anesthesia Invented.Dr. William Morton, a Massachusetts dentist, is the first to use anesthesia for tooth extraction.
- 1846—1846: TEXAS: United States annexes Texas..
- 1846—1846: NATIVE AMERICAN: Butler-Lewis Treaty made with Comanche, Anadarko, Caddo, Lipan, Wichita, and Waco..
- 1846—1846: NATIVE AMERICAN: Comanche Delegation meet with President Polk.
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1846 - 1846 (0 years)
