 Nyorai mberi kweiyi ndima - Nhare yacho yakanzwa ichiderera imwe nguva mushure meHondo yeFrance neIndia 17541763. Munguva iyi, nzvimbo iyo Fort de Cavagnial yakauya pasi pesimba reSpain, kunyange zvazvo varwi veFrance vakaramba vari panzvimbo yeimba kusvikira muna 1764, apo Pierre-Joseph Neyon de Villiers achiita panzvimbo yaJean-Jacques Blaise dAbbadie, mukuru-mukuru weColony of Louisiana akarayira kuti mauto akaiswa munharaunda yacho kuti aputse nzvimbo uye adzokere kuNew Orleans. Sezviri pachena, nzvimbo yacho haina kuparadzwa zvachose, nokuti muna 1804, Meriwether Lewis naWilliam Clark vakangoerekana vawana nzvimbo yacho yekare pavaifamba vachienda kumadokero, vachicherechedza mubhuku ravo kuti Fort de Cavagnial inogona kuzivikanwa nedzimwe dzasara dzemakemikari, uye chimiro chikuru chekusimbiswa, pamwe chete nemvura yakanaka iyo yakaipa mvura. Muna 1819, vatsvakurudzi veboka raStephen Harriman Long raienda kuYellowstone vakacherechedzawo matongo acho, vachiatsanangura semakiromita mashomanana pasi peIsle au Vache. Pakazosvika pakati pezana remakore rechi19, zvisaririra zvose zveimba yacho zvakanga zvanyangarika. 