Louis and Clar Expidition By sjs8401 Apr 30, 1803 The Louisiana Purchase May 8, 1804 When they left St.Louis Aug 21, 1804 The Main River They Trveled The Missouri River Mar 23, 1806 Return to St. Louis Missouri May 8, 2013 The Expedition Spent Thier First Winter Ft. Mandan Shoshone Tribe May 8, 2013 The Peirce Native American Tribe Near Perrie South Daota May 8, 2013 They Met Sacagewa May 8, 2013 RelationShip Between Shoshoe Cheif adn Scacgewa Her Brother May 8, 2013 Greatest Obstacle Going over Rocky Mountians May 8, 2013 Spent Wnter after reaching Pacific Ocean South side