Smith was born in Jericho, now Bainbridge, Chenango County, New York, on January 6, 1799, to Jedediah, 1st and Sally Strong, both of whom were descended entirely from families that came to New England from England during the Puritan emigration between 1620 and 1640. Smith received an adequate English instruction, learned some Latin, and was taught how to write decently. Around 1810, Smith's father, who owned a general store, was caught up in a legal issue involving counterfeit currency, after which the elder Smith moved his family west to Erie County, Pennsylvania. At the age of 13, Smith worked as a clerk on a Lake Erie freighter, where he learned business practices and probably met traders returning from the far west to Montreal.

As agreed, Ashley had sent provisions for the rendezvous, and his men took back 7,400 pounds (3,400 kg) of Smith, Jackson & Sublette furs and a letter from Smith to William Clark, then in the office of the Superintendent of Indian Affairs for the region west of the Mississippi River, describing what he had observed the previous year. Smith left to rejoin the men he had left in California almost immediately after the rendezvous. He was accompanied by 18 men and two French-Canadian women, following much of the same route as the previous year. However, in the ensuing year, the Mojave along the Colorado River who had been so welcoming the previous year had clashed with trappers from Taos and were set on revenge against the whites. While crossing the river, Smith's party was attacked; 10 men, including Silas Gobel, were killed, and the two women were taken captive. Jedediah and the eight surviving men, one badly wounded from the fighting, prepared to make a desperate stand on the west bank of the Colorado, having made a makeshift breast work out of trees and fashioned lances by attaching butcher knives to light poles. The men still had five guns among them, and as the Mojave began to approach, Jedediah ordered his men to fire on those within range. Two Mojaves were shot and killed, one was wounded, and the remaining attackers ran off. Before the Mojave could regroup, Smith and eight other surviving men retreated on foot across the Mojave Desert on the Mohave Trail to the San Bernardino Valley. Smith and the other survivors were again well received in San Gabriel. The party moved north to meet with the group that had been left in the San Joaquin Valley, reuniting with them on September 19, 1827. Unlike in San Gabriel, they were coolly received by the priests at Mission San Jose, who had already received warning of Smith's renewed presence in the area. Smith's party also visited the settlements at Monterey and Yerba Buena (San Francisco). Governor Echeandia, who was at the time in Monterey (capital of Alta California), once again arrested Smith, this time along with his men. Yet despite the breach of trust, the governor once again released Smith after several English-speaking residents vouched for him, including John B. R. Cooper and William Edward Petty Hartnell in Monterey. After posting a $30,000 bond, Smith received a passport, on the same promise - to leave the province immediately and not to return. Also as before, Smith and his party remained in California hunting in the Sacramento Valley for several months. Upon reaching the northern edge of the valley, the party scouted the route to the northeast afforded by the Pit River, but determined it to be impassable, so veered northwest toward the Pacific coast to find the Columbia River and return to the Rocky Mountain region. Jedediah became the first explorer to reach the Oregon Country over land by traveling up the California coast. CANNOTANSWER

What did they discover in California?

Smith and his party remained in California hunting in the Sacramento Valley for several months.