THe indus river vlley civilizations. THere is 5 to 20 inches of rain with good sol fo farming stretches across 6 countries. Grows cotton suger can and wheat. fish farming is possible with canals. Feeds the eco system of temperete forests and arid countryside. used for trading and irrigation provides water for resources. Mesopotamia means between thhe river very fertile land de to rivers and streams. Annual flodd farmers didnt know what to plant people would sttareve if the crops failed. irrigiation canals were made and made dams. tigris and euphratis rivers.
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