Question: where was the osage tribe located in missouri

title: Osage Nation
text: By the late 18th century , the Osage did extensive business with the French Creole fur trader René Auguste Chouteau , who was based in St. Louis ; the city was part of territory under nominal Spanish control after the Seven Years ' War but was dominated by French colonists . They were the de facto European power in St. Louis and other settlements along the Mississippi , building their wealth on the fur trade . In return for the Chouteau brothers ' building a fort in the village of the Great Osage 350 miles ( 560 km ) southwest of St. Louis , the Spanish regional government gave the Chouteaus a six - year monopoly on trade ( 1794 -- 1802 ) . The Chouteaus named the post Fort Carondelet after the Spanish governor . The Osage were pleased to have a fur trading post nearby , as it gave them access to manufactured goods and increased their prestige among the tribes . Osage