Answer:
B. The early Spanish period.
Explanation:
The oldest acequias found in the United States dated from 400 years ago and they continue to provide a primary water source for farming and ranching ventures. Most of these were placed in areas once occupied by Spain or Mexico like New Mexico and Colorado.
Studies taken through 1995-1999 found out that the acequia farms provided a vital ecosystem and economic base services to the region in which they are located.
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