Final answer:
The creation of the iron plow enabled people to settle in the dense jungle along the Ganges River.
Step-by-step explanation:
The factor that made it possible for people to settle in the dense jungle along the Ganges River was the creation of the iron plow. The iron plow was a technological advancement that allowed farmers to clear the dense jungle and cultivate the land more easily. With the use of the iron plow, farmers could grow crops and establish settlements in the otherwise challenging environment.
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