It could've proceed and Worsen many situations.
The answer is Manifest Destiny.
Hope this helps.
Answer:
<em><u>C. Mountains</u></em>
Explanation:
South of the Canadian River, along the eastern edge of New Mexico, the land is referred to as the High Plains or Staked Plains. These High Plains run along the Texas border in New Mexico. In the central part of New Mexico, the Rocky <em><u> mountains </u></em>extend into New Mexico from Colorado to the north.
The rivers allowed a good system of communication between the tribes and they were a good source of food & transportation.