The correct answer in the first question is letter e. It is because during the mid-nineteenth century, the plain Indians were considered to have the most widespread in the West in which made letter E as the correct answer.
The correct answer in the second question is Yurok as they are not included or part of the plains Indians. Yurok are considered to be the downriver people that has a neighboring language. They are not Indians but rather they are native Americans living in the northwestern of the California. The correct answer is letter A.