The Otoe are the first tribe encountered…
1804 CE
They meet at a place on the west bank of the Missouri River that will become known as the Council Bluff.
The Otoe were once part of the Siouan tribes of the Great Lakes region, a group commonly known as the Winnebago.
At some point, a large group split off and began to migrate to the south and west.
This group eventually split again, coalescing into at least three distinct tribes: the Iowa, the Missouria and the Otoe.
The Otoe had settled in the lower Nemaha River valley, which includes much of present southeastern Nebraska, and had adopted the horse culture and semi-nomadic lifestyle of the Great Plains.