Chouteau traded with them and made his home at present-day Salina, Oklahoma, in the western part of their territory. Wars with other tribes The Choctaw chief Pushmataha, based in Mississippi, made his early reputation in battles against the Osage tribe in the area of southern Arkansas and their borderlands. In the early 19th century, some Cherokee, such as Sequoyah, voluntarily removed from the southeast to the Arkansas River valley under pressure from European-American settlement in their traditional territory. They clashed there with the Osage, who controlled this area. The Osage regarded the Cherokee as invaders. They began raiding Cherokee towns, stealing horses, carrying off captives (usually women and children), and killing others, trying to drive out the Cherokee with a campaign of violence and fear. The Cherokee were not effective in stopping the Osage raids and worked to gain support from related tribes as well as whites. The peoples confronted each other in the "Battle of Claremore Mound," in which 38 Osage warriors were killed and 104 were taken captive by the Cherokee and their allies. As a result of the battle, the United States constructed Fort Smith in present-day Arkansas. It was intended to prevent armed confrontations between the Osage and other tribes. The U.S. compelled the Osage to cede additional land to the federal government in the treaty referred to as Lovely's Purchase. In 1833, the Osage clashed with the Kiowa near the Wichita Mountains in modern-day south-central Oklahoma, in an incident known as the Cutthroat Gap massacre. The Osage cut off the heads of their victims and arranged them in rows of brass cooking buckets. No Osage died in this attack. Later, Kiowa warriors, allied with the Comanche, raided the Osage and others. In 1836, the Osage prohibited the Kickapoo from entering their Missouri reservation, pushing them back to ceded lands in Illinois. U.S. interaction After the Lewis and Clark Expedition was completed in 1806, Jefferson appointed Meriwether Lewis as Indian Agent for the territory of Missouri and the region. There were continuing confrontations between the Osage and other tribes in this area. Lewis anticipated that the U.S. would have to go to war with the Osage, because of their raids on eastern Natives and European-American settlements. However, the U.S. lacked sufficient military strength to coerce Osage bands into ceasing their raids. It decided to supply other tribes with weapons and ammunition, provided they attack the Osage