Answer:
The Roman aqueduct was a channel used to transport fresh water to highly populated areas.
Explanation:
As water flowed into the cities, it was used for drinking, irrigation, and to supply hundreds of public fountains and baths. Roman aqueduct systems were built over a period of about 500 years, from 312 B.C. to A.D. 226.
Random assignment minimizes differences between experimental and control groups. random sampling minimizes differences between a sample and a population.
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If i remember correctly i believe it was irrigation
