<Li> November--December: Constructed Fort Mandan . </Li> <Li> November 2: Hired Baptiste La Page to replace Newman . </Li> <Li> November 4: The captains meet Toussaint Charbonneau, a French - Canadian fur trapper living among the Hidatsas with his two Shoshone wives, Sacagawea and Little Otter . </Li> <Li> December 24: Fort Mandan is considered complete . Expedition moves in for the winter season . </Li>

Who helped lewis and clark on their journey