On November 8, 1889, Montana was admitted to the Union. The many Indian tribes living in Montana before the arrival of Europeans could be separated into two groups, those who lived on the Plains and those who lived in the mountains. Plains Indian tribes included the Arapaho, Assiniboine, Atsina, Blackfeet, Cheyenne, and Crow. Mountain-dwelling tribes included the Bannock, Flathead, Kalispel, Kutenai, and Shoshone tribes. The Sioux, Mandan, and Nez Perce hunted in the Montana region, but usually lived elsewhere. French trappers were probably the first whites to reach Montana, perhaps as early as the 1740s. The Lewis and Clark Expedition explored Montana on their way to the Pacific Coast in 1805 and when returning in 1806. By 1807, fur traders had come to the Montana area. Jesuit missionaries established St. Mary’s Mission in 1841. Located near today’s Stevensville, it was the first attempt to create a permanent settlement in the region. The American Fur Company built Fort Benton on the Missouri River in 1847. This is Montana’s oldest continuously populated town.