Answer:
One of the earliest people to set up trade in the Three Forks area was Jean Pierre Chouteau. He and his brother had been running a successful trading post for years in St. Louis. The trading post at Three Forks was set up on the Neosho River in 1796.
Step-by-step explanation:
Jean-Pierre Chouteau was a fur trader, he was French and along with his half brother was one of the first settlers of St. Louis in New Orleans. Along with his brother, Jean-Pierre Chouteau established a successful commercial headquarters, even becoming a monopoly of the fur trade. They received the titles of "barons of the river" after creating a commercial post in Three Forks, in the river Neosho in 1796.