The Ganges in India and Chang Jiang (Yangtze)in China are river valleys with concentrations of

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The Ganges in India and Chang Jiang (Yangtze) in China are river valleys that are known for intensive subsistence agriculture. These regions are densely populated and have been cultivated for centuries using intensive farming techniques, such as irrigation and terracing, due to the fertile soil and abundant water resources provided by the rivers. Swidden agriculture (A) and pastoral nomadism (B) are not common practices in these regions, and extensive commercial agriculture (D) is less prevalent than intensive subsistence agriculture.

The Ganges in India and Chang Jiang (Yangtze)in China Are