Final answer:
Historically, most people in India lived near the Indo-Gangetic Plain due to its fertile soil and availability of water.
Step-by-step explanation:
In India, historically, most people lived near the Indo-Gangetic Plain, which is a vast fertile plain and one of the world's most populous regions. This area is formed by the Indus and Ganges river systems and stretches across northern and eastern India. The fertile soil and availability of water from these rivers made it conducive for agriculture, leading to a high population density.
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