Why did settlers from the United States move to the Great Plains? | A they had nowhere to go. | B there was lots of riches to find on the Great Plains. | C native Americans had given away their land . | D the US groverment took native American land and sold it very cheap.

I’d go with letter d

Syllable added to a root word to change its meaning : affixan independent word--example run,walk,book : free morphemeaffix that gives grammatical meaning such as tense or number : inflectiona word part that must attach to a word in order to be usable : bound morphemedegree of comparison formed by adding -er or more to an adjective : comparativedegree of comparison formed by adding -est or most to an adjective : superlativeaffix added to the beginning of a word : prefixaffix added to the end of a word : suffixroot word of lovable : lovetwo roots used together to form one word : combining form

The position of the senate