Final answer:
The cities of Harappa and Mohenjo Daro depended on the Indus River valley for fertile farmland.
Step-by-step explanation:
The cities of Harappa and Mohenjo Daro in the Indus River valley depended on the river for fertile farmland. The river provided a reliable water source and fertile soil for agriculture, allowing the residents to grow crops and sustain their cities. The availability of fertile farmland contributed to the prosperity and development of these ancient civilizations.
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