History of Idaho - European Exploration

European Exploration

Idaho was the last of the 50 states explored by people of European descent. The Lewis and Clark expedition entered present-day Idaho on August 12, 1805, at Lemhi Pass. The first expedition to enter southern Idaho is believed to be a group led by Wilson Price Hunt, which navigated the Snake River while attempting to blaze an all-water trail westward from St. Louis, Missouri, to Astoria, Oregon, in 1811 and 1812. At that time, approximately 8,000 Native Americans lived in the region.

Fur trading led to the first significant incursion of Europeans in the region. Andrew Henry of the Missouri Fur Company first entered the Snake River plateau in 1810. He built Fort Henry on Henry's Fork on the upper Snake River, near modern St. Anthony, Idaho. However, this first American fur post west of the Rocky Mountains was abandoned the following spring.

The British-owned Hudson's Bay Company next entered Idaho and controlled the trade in the Snake River area by the 1820s. The North West Company's interior department of the Columbia was created in June 1816, and Donald Mackenzie was assigned as its head. Mackenzie had previously been employed by Hudson's Bay and had been a partner in the Pacific Fur Company, financed principally by John Jacob Astor. During these early years, he traveled west with a Pacific Fur Company's party and was involved in the initial exploration of the Salmon River and Clearwater River. The company proceeded down the lower Snake River and Columbia River by canoe, and were the first of the Overland Astorians to reach Fort Astoria, on January 18, 1812.

Under Mackenzie, the North West Company was a dominant force in the fur trade in the Snake River country. Out of Fort George in Astoria, Mackenzie led fur brigades up the Snake River in 1816-1817 and up the lower Snake in 1817-1818. Fort Nez Perce, established in July, 1818, became the staging point for Mackenzies' Snake brigades. The expedition of 1818-1819 explored the Blue Mountains, and traveled down the Snake River to the Bear River and approached the headwaters of the Snake. Mackenzie sought to establish a navigable route up the Snake River from Fort Nez Perce to the Boise area in 1819. While he did succeed in traveling by boat from the Columbia River through the Grand Canyon of the Snake past Hells Canyon, he concluded that water transport was generally impractical. Mackenzie held the first rendezvous in the region on the Boise River in 1819.

Despite their best efforts, early American fur companies in this region had difficulty maintaining the long-distance supply lines from the Missouri River system into the Intermountain West. However, Americans William H. Ashley and Jedediah Smith expanded the Saint Louis fur trade into Idaho in 1824. The 1832 trapper's rendezvous at Pierre's Hole, held at the foot of the Three Tetons in modern Teton County, was followed by an intense battle between the Gros Ventre and a large party of American trappers aided by their Nez Perce and Flathead allies.

The prospect of missionary work among the Native Americans also attracted early settlers to the region. In 1809, Kullyspell House, the first white-owned establishment and first trading post in Idaho, was constructed. In 1836, the Reverend Henry H. Spalding established a Protestant mission near Lapwai, where he printed the Northwest's first book, established Idaho's first school, developed its first irrigation system, and grew the state's first potatoes. Narcissa Whitman and Eliza Hart Spalding were the first non-native women to enter present-day Idaho.

Cataldo Mission, the oldest standing building in Idaho, was constructed at Cataldo by the Coeur d'Alene and Catholic missionaries. In 1842, Father Pierre-Jean De Smet, with Fr. Nicholas Point and Br. Charles Duet, selected a mission location along the St. Joe River. The mission was moved a short distance away in 1846, as the original location was subject to flooding. In 1850, Antonio Ravalli designed a new mission building and Indians affiliated with the church effort built the mission, without nails, using the wattle and daub method. In time, the Cataldo mission became an important stop for traders, settlers, and miners. In addition to acting as a place for rest from the trail, the mission offered needed supplies and was a working port for boats heading up the Coeur d'Alene River.

During this time, the region which became Idaho was part of an unorganized territory known as Oregon Country, claimed by both the United States and Great Britain. The United States gained undisputed jurisdiction over the region in the Oregon Treaty of 1846, although the area was under the de facto jurisdiction of the Provisional Government of Oregon from 1843 to 1849. The original boundaries of Oregon Territory in 1848 included all three of the present-day Pacific Northwest states and extended eastward to the Continental Divide. In 1853, areas north of the 46th Parallel became Washington Territory, splitting what is now Idaho in two. The future state was reunited in 1859 after Oregon became a state and the boundaries of Washington Territory were redrawn.

While thousands passed through Idaho on the Oregon Trail or during the California gold rush of 1849, few people settled there. In 1860, the first of several gold rushes in Idaho began at Pierce in present-day Clearwater County. By 1862, settlements in both the north and south had formed around the mining boom.