Mormons started the first irrigation system in the West.
In that year --1902-- the United States government launched its own irrigation program, based on Mormon experience, guided by Mormon laws, run largely by Mormons. (Bureau of Reclamation)
Only one desert civilization, out of dozens that grew up in antiquity, has survived uninterrupted into modern times. And Egypt's approach to irrigation was fundamentally different from all the rest.引自 Introduction - A Semi Desert Heart
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