Cholera outbreaks and pandemics
That year, cholera was transmitted along the California, Mormon and Oregon Trails as 6,000 to 12,000 are believed to have died on their way to the California Gold Rush, Utah and Oregon in the cholera years of 1849–1855. It is believed more than 150,000 Americans died during the two pandemics between 1832 and 1849.
Pierre's Hole
In the brief but bloody battle at least twenty-six Gros Ventres were killed, including some women and children, and perhaps a dozen traders and Flatheads. Due to a bullet wound and a broken shoulder, William Sublette returned to the eastern United States under the care of Robert Campbell. The party arrived in St. Louis on October 3, 1832.
After he recovered, he returned to the east slope of the Rockies to found the trading post and fort sitting aside the gateway to South Pass and the Oregon Country on what was (in 1832 already) becoming called the Oregon Trail.