Because there is a water shortage happening there. They needed to conserve water and be supplied from sources. Right now there are strict measures in the use of water around that area to ensure that it does not go to waste.
It blocked other people from coming in to the land
D.<span>All of the above are true.
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<span>Social mobility is the movement of individuals, families, households, or other categories of people within or between social strata in a society. It is a change in social status relative to others' social location within a given society.</span>
The Manifest Destiny was the belief that America need to expand its borders. This shaped the use due to the fact that if caused many disputes among the natives and Mexicans that controlled most of the land that was unclaimed.