Answer:
Nomads
Step-by-step explanation:
The native American groups living on the great plains such as the Sioux are often called The Sioux Nation. They are a large group of Native American tribes that traditionally lived in the Great Plains. There are three major divisions of Sioux, these divisions include;
Eastern Dakota,
Western Dakota,
and the Lakota.
Most of the Sioux tribes were nomadic people who moved around from one place to the other, following there bisons or buffaloes herd.
Majority of their lifestyle was based around hunting bison. This is why they're to be called nomads. They had the attributes of nomads and lived like one.