 The Native Americans that lived along the Missouri had access to ample food , water , and shelter . Many migratory animals inhabited the plains at the time , providing them meat , clothing , and other everyday items ; there were also great riparian areas in the river 's floodplain that provided them with natural herbs and staple foods . No written records from the tribes and peoples of the pre @-@ European period exist because they did not use writing . According to the writings of explorers , some of the major tribes along the Missouri River included the Otoe , Missouria , Omaha , Ponca , Brulé , Lakota , Sioux , Arikara , Hidatsa , Mandan , Assiniboine , Gros Ventres and Blackfeet . 
 The Native Americans <a href='null_relcl' title='1'><mark>that</mark></a>lived along the Missouri had access to ample food , water , and shelter . Many migratory animals inhabited the plains at the time , providing them meat , clothing , and other everyday items ; <a href='dey_it' title='2'><mark>there</mark></a> <a href='uninflect' title='3'><mark>were</mark></a> also great riparian areas in the river <a href='null_genetive' title='4'><mark>'s</mark></a>floodplain <a href='null_relcl' title='5'><mark>that</mark></a>provided them with natural herbs and staple foods . No written records from the tribes and peoples of the pre @-@ European period exist because they did not use writing . According to the writings of explorers , some of the major tribes along the Missouri River included the Otoe , Missouria , Omaha , Ponca , Brulé , Lakota , Sioux , Arikara , Hidatsa , Mandan , Assiniboine , Gros Ventres and Blackfeet . 
The Native Americans lived along da Missouri had access to ample food , water , and shelter . Many migratory animals inhabited tdaplains at the time , providing em meat , clothing , and other everyday items ; it was also great riparian areas in thdaiver  floodplain provided themith natural herbs and staple foods . No written records from the tribes and peoples of the pre @-@ European period exist b/c they did not use writing . According to the writings of explorers , some of thedajor tribes along the dasouri River included the Otoe , Missouria , Omaha , Ponca , Brulé , Lakota , Sioux , Arikara , Hidatsa , Mandan , Assiniboine , Gros Ventres and Blackfeet .