Final answer:
The Plains Indians and Great Basin Indians were indigenous peoples impacted by European colonization and exploration in terms of land conflicts, forced relocation to reservations, and the introduction of guns and diseases.
Step-by-step explanation:
The Indians of the Plains and Great Basin were indigenous peoples who inhabited the vast regions of present-day North and South Dakota, Nebraska, Kansas, Oklahoma, Montana, Wyoming, and portions of Colorado and Texas.
European colonization and exploration had a significant impact on the Plains Indians. As settlers moved westward, conflicts arose over land and resources. The government's push to confine Plains Indians to reservations disrupted their traditional way of life and forced them to abandon nomadic hunting and farming practices. The introduction of guns and diseases by white traders also had devastating effects on the Plains Indians.