Teton Sioux tribe

This area of the river the Teton Sioux claimed as their territory and tried to prevent the explorers from passing through.  When Lewis and Clark had counseled with the Yankton Sioux, about six weeks down river, they were told that the Teton Sioux would be much more aggressive which was true.  It was only by the fact that all men of the corps had rifles and the mounted swivel canon was aimed at the Indians that they were able to pass through this area.  They didn't have an interpreter for the Sioux language and only used hand signals which hampered their communication.